Stock Trading Canary

Data as of 5 Nov 2026

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COMPANY RESEARCH

HYDROFARM HOLDINGS GROUP, INC.

HYFM · United States · Industrials

Insider Signal

Snapshot: 05 Nov 2026 · 180-day research window

Data quality under review
Insider Signal
41.4 / 100
Research score, not a buy recommendation
Reported buyers
1
180-day scoring window
Net purchases
20.0k USD
180 days · purchases less sales
Latest disclosure
2026-10-29
Publication date
What stands out
  • PARKER MARK S accounts for 100% of comparable reported purchase value; buyer breadth and value are different measures.
  • The share price fell 27.9% over 180 days; inspect disclosure dates before interpreting the purchases.

Price vs insider buying

HYFM · USD

● Purchase × Sale ◇ Public disclosure ▥ 15-day cluster ·

Circles and crosses mark trade dates; diamonds below the axis mark later public disclosures. The trade became public on its disclosure date. Prices are nearest-session closes, not insider execution prices. Marker sizes are not compared when values or currencies differ.

BULL VS BEAR

Two readings of this buying

The same filings, read two ways. Each line is a fact stored for this company with the number behind it, and appears only when that number crosses a fixed threshold. Neither side is a forecast and no winner is declared.

Where the evidence comes from

The two kinds of evidence disagree: the purchases themselves carry bull lines (bought in the last two weeks), while share price and trading argue against (price down over six months, price trails its sector). No data is held for: company results, company actions.

  • The insider purchases themselvesBullbought in the last two weeks Bearone buyer only, small purchases3 checked, under the threshold · 3 missing
  • Share price and tradingBearprice down over six months, price trails its sector
  • Short sellers2 checked, under the threshold
  • Company results2 missing
  • Company actionsno data held

Bull case · the buying is informative

  • The latest purchase is 9 days old (2026-10-27). The buying is current, not left over from an earlier quarter.

Bear case · discount it

  • Only one insider bought. A single purchase can reflect that person's own finances rather than a view on the company.
  • All purchases in the window total $20k: a small commitment in absolute terms.
  • Share price and tradingThe share price is down 30% over six months (three months −54%, one month −26%). Insiders have bought into a fall the market has not reversed.
  • Share price and tradingOver three months the share price changed −54% and the median of 115 Industrials companies changed −17%: 38 points behind. The market has marked this company down against its own sector.

Evidence still missing

  • No buyer here has 5 or more completed earlier purchases on record, so there is no track record to weigh.
  • The company's market value is not captured, so the purchases cannot be stated as a share of the business or of its trading volume.
  • No earnings, margin or cash-flow figures are captured for this company. The latest annual and interim reports are where to check whether the business is improving or deteriorating.
  • The 10b5-1 box of these Form 4 filings has not been read, so whether the purchases followed a pre-arranged plan is not known.
  • Form 4 states the shares held after each trade. This site reads that from the SEC's quarterly data, which is published after a quarter ends, so it does not have it yet for these filings. Whether a purchase added 1% to a personal stake or doubled it is in the filing, not on this page.
Checked and under the threshold: 5, 1 close to it
  • BearFINRA short interest on 2026-10-15 equals 4.8 days of average trading volume and 9.1% of the 4,819,323 shares outstanding. Counted for the bear side from 10 days, or from 10% of the shares outstanding. close to the threshold
  • Either1 insider bought in the last 180 days and 0 in the 180 days before. Bull when the number at least doubles and rises by two; bear when at least two bought before and no more buy now.
  • BearNo insider sale is recorded in the same 180 days.
  • BearOver the last 5 trading days to 2026-11-05, 33% of this stock's off-exchange volume was sold short; over the 60 days before, 50%. The market's median is 47%. This is trading volume, not a position: a market maker who sells short and covers the same day is counted, so about half of all volume is short on an ordinary day. It is shown for comparison and counts for neither side.
  • BearNo insider filing in the last 180 days opened a hedge on this stock.

Both columns arrange stored facts only. They do not change the insider score or the ranking and are not investment advice.

Who is trading?

Named filings in 180 days. Purchase values are summed only when complete and in one currency.

InsiderTransaction activityPurchase valueLatest tradeDetails
PARKER MARK SCEO / chair1 buy · 0 sell20.0k USD2026-10-27
View transactions · 2
Trade dateDisclosureTypeSharesPriceCurrencyReported valueSource
2026-10-272026-10-29Open market purchase220990.905USD19999.595Source ↗
2026-08-082026-08-11Shares withheld for tax or exercise price740.01.6USD1184.0Source ↗
Ackerman EricaCAO and Corporate Controller0 buy · 0 sellNo purchases2026-08-08
View transactions · 1
Trade dateDisclosureTypeSharesPriceCurrencyReported valueSource
2026-08-082026-08-11Shares withheld for tax or exercise price138.01.6USD220.8Source ↗
Chung PatrickBoard member0 buy · 0 sellNo purchases2026-06-23
View transactions · 1
Trade dateDisclosureTypeSharesPriceCurrencyReported valueSource
2026-06-232026-06-25Grant or award30000.00.0USD0.0Source ↗
Denis MelisaBoard member0 buy · 0 sellNo purchases2026-06-23
View transactions · 1
Trade dateDisclosureTypeSharesPriceCurrencyReported valueSource
2026-06-232026-06-25Grant or award30000.00.0USD0.0Source ↗
Persofsky RenahBoard member0 buy · 0 sellNo purchases2026-06-23
View transactions · 1
Trade dateDisclosureTypeSharesPriceCurrencyReported valueSource
2026-06-232026-06-25Grant or award30000.00.0USD0.0Source ↗
Toler William DouglasCEO / chair0 buy · 0 sellNo purchases2026-10-27
View transactions · 1
Trade dateDisclosureTypeSharesPriceCurrencyReported valueSource
2026-10-272026-10-29Grant or award552480.905USD49999.44Source ↗
Yetter Richard ChristopherBoard member0 buy · 0 sellNo purchases2026-10-27
View transactions · 2
Trade dateDisclosureTypeSharesPriceCurrencyReported valueSource
2026-10-272026-10-29Grant or award1381210.905USD124999.505Source ↗
2026-06-232026-06-25Grant or award30000.00.0USD0.0Source ↗

INSIDER SIGNAL

Score breakdown:41.4 / 100

1 insiders · 1 purchase events · $20k net purchases

US #800 · United States #800

WHY THIS SIGNAL?

Score anatomy

Each bar is that part's points in the score; the five parts add up to the score.

Number of buyers+7.0 / 35

How many different insiders bought within 15 days

Amount bought+2.8 / 25

The value bought, net of any insider sales

Buyers' roles+13.0 / 20

Lower in the company scores higher: in the backtest, purchases by the most senior insiders did worse

How recent+8.6 / 10

How long ago the latest purchase took place

Buying against selling+10.0 / 10

Lower when insiders also sold

What is holding the score back?

  • ⚠ Few buyers · fewer than 4 different insiders
  • ⚠ The amount bought is small on the score's scale
  • ⚠ Buyers' roles add little · most senior buyer: President; the most senior score lowest
  • ✓ Recent buying · latest purchase 2026-10-27

Buyers' roles follow the US order of roles: CEOs, chairs and 10% owners score lowest.

BUYING PROFILE

1 events · 1 insiders · 180d

Cluster 0%Repeat 0%Independent 100%Large 0%

Percentages are mutually exclusive and sum to 100%.

Buying concentration

100%

Largest buyer:PARKER MARK S · 20k USD
Purchases counted, before sales:20k USD

The amount at the top of the page is purchases minus sales; this one counts purchases only, in the filing currency, so the two can differ. The score counts how many people bought; this shows separately who bought the most.

This is a ranking under the current US screening rules—not a probability of gain, return forecast, or buy recommendation.

Key purchase quotes (filing currency)

FilerPrice per unitTrade date
PARKER MARK S0.905 USDOct 27, 2026
Model details

Cluster breakdown (does not change the score)

15-day buyer breadth (count)
1 distinct reported filers
Peak time window
2026-10-27 to 2026-10-27
Current breadth input
0.200 (capped at 4+ buyers)
Buyer independence
Not yet measured; related-party fields are not cross-market comparable

What the filings show

Filing and data quality

These checks are auditable context; they do not change the rank or score.

Identity match
REVIEW
Ticker / ISIN
Ticker or ISIN missing
Filing source links
15 / 15
Median disclosure lag
2 days
Latest disclosure age
7 days at snapshot
Corrections / revisions
0
Score-factor detail
Saved

Insider timeline

One insider bought, once (27 Oct). The share closed at 0.79 that day and at 0.73 most recently (−7.7%).

PARKER MARK SPARKER MARK SPresidentCEO / chair2026-10-27 · PARKER MARK S · purchase · 20,000 USD2026-05-11 to 2026-05-17: 232 companies2026-05-18 to 2026-05-24: 259 companies2026-05-25 to 2026-05-31: 171 companies2026-06-01 to 2026-06-07: 192 companies2026-06-08 to 2026-06-14: 172 companies2026-06-15 to 2026-06-21: 163 companies2026-06-22 to 2026-06-28: 108 companies2026-06-29 to 2026-07-05: 93 companies2026-07-06 to 2026-07-12: 80 companies2026-07-13 to 2026-07-19: 79 companies2026-07-20 to 2026-07-26: 70 companies2026-07-27 to 2026-08-02: 77 companies2026-08-03 to 2026-08-09: 131 companies2026-08-10 to 2026-08-16: 200 companies2026-08-17 to 2026-08-23: 218 companies2026-08-24 to 2026-08-30: 184 companies2026-08-31 to 2026-09-06: 175 companies2026-09-07 to 2026-09-13: 139 companies2026-09-14 to 2026-09-20: 186 companies2026-09-21 to 2026-09-27: 134 companies2026-09-28 to 2026-10-04: 130 companies2026-10-05 to 2026-10-11: 73 companies2026-10-12 to 2026-10-18: 72 companies2026-10-19 to 2026-10-25: 84 companies2026-10-26 to 2026-11-01: 107 companies2026-11-02 to 2026-11-08: 63 companiesCompanies disclosing purchases, per weekJunJulAugSepOctNov

Tap an item for what it means.

●A purchase: the bigger the dot, the more was bought

Each dot is one insider's purchases on one day. The dot's area follows the amount: the largest purchase here gets the largest dot. Hold the pointer over a dot to see the date and the amount.

Blue line: this share's price, −27.9% over these six months

The closing price of each day, from 1.01 on 2026-05-11 to 0.73 on 2026-11-05. The line has no scale; read it for high and low: a dot on a low stretch was bought cheaply, a dot on a high stretch was not.

Dashed line: the typical stock on the same exchange, −9.6%

Taken from the 1610 other stocks on the same exchange that this site holds prices for. Each is measured from the first day of the window, and every day the middle one is drawn. It starts where the blue line starts, so the gap between the two is the difference: this share −27.9%, the typical one −9.6%, 18.3 points behind. It is not an index and not a comparison within one industry.

▂Grey bars: companies across United States disclosing purchases each week

A taller bar is a week in which more companies disclosed insider purchases.

This company: insiders buying per month, last 12 months

Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
1Oct
Nov

Darker bars are inside the 180-day window above.

Who traded

InsiderRolePurchasesSalesBoughtFirst purchaseShare price since
PARKER MARK SCEO / chair1—20.0k USD2026-10-27−7.7%

Insiders' buying price vs the latest close

Insiders paid 0.9050 USD a share on average (1 purchase line, 1 buyer, 2026-10-27 – 2026-10-27). The close on 2026-11-05 was 19.5% below that price.

Prices paid are weighted by shares and taken from the filings; dividends are not counted. Not scored.

Buying size vs market trading

Complete price and volume history is not yet available.

Market-data coverage: 0 verified sessions · Latest session: — · Ratio status: Unavailable

Traded value is estimated as close × shares traded, in major currency units. Includes disclosed qualifying purchases; disclosures may lag. Contractual or planned acquisitions are not necessarily discretionary. Ratios describe relative trading size, not market participation or score contributions.

Sector context

Industrials

Buying breadth
4.4% (29 / 653 issuers)
Sector rank
#5 / 13

This is sector-level research context. It does not affect the Insider Signal or ranking.

View US sector research →

Insider profile outcomes

Historical performance following insider filings. The company role is translated below each name while preserving the original title.

Events are disclosure-level observations; related disclosures published on the same date may share a return path and may not be statistically independent. This research enrichment does not affect the insider score or ranking.

PARKER MARK SPresident
First purchase in 12M
1/1
Large purchase ≥ $100k
0/1
Cluster buying · 15D
0/1
Buying the dip · ≥20% below prior 52W high
Not classifiable
Routine / opportunistic
Not classifiable

Signal outcomes

Calculated from immutable US ranking snapshots; excess return is stock return minus SPY return. Newly saved snapshots remain pending until each forward horizon matures. This never affects the US score.

HorizonStatusResult
5DAwaiting maturity—
20DAwaiting maturity—
60DAwaiting maturity—
120DAwaiting maturity—

Market context

PRICE PERFORMANCE

1M
-25.7%
3M
-54.5%
6M
-30.0%
12M
-69.7%

VOLATILITY & LIQUIDITY

Volatility
251.3%
Beta
—
Avg daily volume
$263,851.1
20-session drawdown
-20.9%
60-session drawdown
-62.9%
Latest volume / prior median
1.0×

VALUATION

Market cap
—
P/E
—

FUNDAMENTALS

Revenue
$134.3M
Net income
$-289.8M
Operating profit
$-276.9M
Equity
$-63.3M
Cash
$6.3M
Debt
$228.9M
Operating cash flow
$-14.1M
Free cash flow
$-15.1M
Profit margin
—
ROE
—
Industry
—

Prices to 05 Nov 2026: price cache (yfinance). From OpenBB/yfinance, captured 02 Nov 2026: Revenue, Net income, Equity, Operating profit, Cash, Debt, Operating cash flow, Free cash flow. It does not affect the insider score or rank.

Dividends

No cash dividend in the last five years.

Yahoo Finance: cash dividends by ex-dividend date, the latest close, the payout ratio (dividends ÷ 12-month earnings per share) and announced dates; special dividends included, stock dividends and splits not. Not part of any score.

Insiders and institutions

Insiders, ranking window: $20.0k net bought · buyers: 1 · last 2026-10-27

Holders of more than 5% (SEC Schedules 13D and 13G)

HolderOf the classScheduleAs ofChange
DG Capital Management, LLC9.90%13G2026-10-27—
Bogaczyk Janusz Michal9.80%13G2025-03-21 · over a year ago+0.80 pp
Dumont Global LP7.09%13G2025-02-12 · over a year ago—
Dumont Global LP6.55%13D2025-10-01 · over a year ago—

Filings in the last 12 months

1 new · 0 raised · 0 cut · 0 fell to 5% or less

As ofHolderScheduleStakeWhat happened
2026-10-27DG Capital Management, LLC13G— → 9.90%new holding

Source: SEC, Schedules 13D and 13G, filed in a structured format since 18 December 2024; earlier filings are not read, so a holder that has not filed since then is not shown. 13D: the holder may seek to influence the company (activists, founders, strategic holders); it must amend within two business days of a change of 1% or more. 13G: the holder states it holds passively; it amends within 45 days after the quarter in which its holding changed materially, so a figure can be months old. The percentage is the filer's own, of the class of shares it names. Context only; not part of the score.

Institutional managers (SEC Form 13F)

Held on 2026-06-30
$12.5k1 managers · 14.7k shares · 0.3% of the shares outstanding (SEC cover page, 2026-08-12)
Shares held, change on the quarter
−67.6%since 2026-03-31
Change on the year
−70.0%since 2025-06-30
Managers
0 new · 0 added · 1 cut · 0 sold out

13F managers held fewer shares at the quarter end than a quarter earlier.

Source: SEC Form 13F, filed within 45 days of each quarter end by managers with $100 million or more in US-listed shares; long positions only (no short positions, options left out). Late filers of the quarter are not counted. A parent and a subsidiary can both report the same shares, so the total can count some twice. The quarter end (2026-06-30) and the insiders' purchases (last 2026-10-27) are different periods. Context only; not part of the score.

Regulatory filings

Unfold all 14 filings

Results and insider purchases

Results (8-K)Bought within 5 sessionsBought within 20 sessionsBuyers, 20 sessions before
2026-08-1416:09 ET · after the closeFirst session 2026-08-17NoneNone0
2026-05-1516:03 ET · after the closeFirst session 2026-05-18NoneNone0
2026-03-2708:05 ET · before the openNoneNone0
2025-11-1207:37 ET · before the openNoneNone0

Results dates are the company's 8-K filings to the SEC under Item 2.02 (results of operations); one filed after the close counts from the next session. Purchases are open-market buys reported on Form 4 (code P), by trade date; a Form 4 can arrive two business days after the trade, so the latest days can still fill in. Facts only; this does not change the score or rank.

Ownership and trading-plan context

Direct / indirect ownershipDirect, Mixed direct / indirect
10b5-1 filing evidenceNot declared in filing field
Evidence retrieved2026-11-03T00:16:28+00:00

These are accession-level filing fields. Unavailable means the evidence was not fetched or parsed; it is never inferred as “No” and does not adjust the US score.

Filing evidence

These are underlying national-feed records from the 365-day window ending on the saved ranking snapshot. The score uses only the latest 180 days; older qualifying equity purchases remain visible for audit but do not enter the current score. The original filer, role, transaction classification, instrument, price, volume, value and source fields are retained. The first three rows are shown; remaining records can be unfolded for audit. Other transaction types are retained but excluded from the score.

Excluded transactions & classification

1 qualifying purchase disclosure(s) · 1 transaction line(s)

Trade Oct 27, 2026Open market purchase
PARKER MARK S · President
Published Oct 29, 2026 · Common Stock, $0.0001 par value per share · 22099 shares × 0.905 USD · 19999.595 USD
Open filing

Showing 1 of 1 matching raw-feed row(s) from the current 365-day research window. Prices and reported values remain in the filing currency and its major unit (for example, UK pence are parsed as GBP). The screen-level $ aggregate is separately FX-normalised for research ranking, not a trade-date conversion.

Other disclosed transactions · excluded from score

View 14 other transaction(s)

Trade Dec 5, 2025Open market sale
Denis Melisa · Director
Published Dec 8, 2025 · Common Stock, $0.0001 par value per share · 120.0 shares × 1.92 USD · 230.39999999999998 USD
Open filing
Trade Dec 4, 2025Open market sale
Denis Melisa · Director
Published Dec 8, 2025 · Common Stock, $0.0001 par value per share · 2875.0 shares × 1.88 USD · 5405.0 USD
Open filing
Trade Jan 6, 2026Shares withheld for tax or exercise price
Toler William Douglas · Chief Executive Officer
Published Jan 8, 2026 · Common Stock, $0.0001 par value per share · 5189.0 shares × 1.51 USD · 7835.39 USD
Open filing
Unfold all 11 remaining filing row(s)
Transaction datePublishedFilerRoleTransactionInstrumentPrice (local currency)Quote currencyVolumeReported value (local currency)Source
2026-01-062026-01-08PARKER MARK SPresidentShares withheld for tax or exercise priceCommon Stock, $0.0001 par value per share1.51 USDUSD1672.02524.72 USDOpen filing
2026-01-062026-01-08O'Brien Kevin PatrickChief Financial OfficerOpen market saleCommon Stock, $0.0001 par value per share1.51 USDUSD1150.01736.5 USDOpen filing
2026-01-062026-01-08Ackerman EricaCAO and Corporate ControllerShares withheld for tax or exercise priceCommon Stock, $0.0001 par value per share1.51 USDUSD687.01037.3700000000001 USDOpen filing
2026-06-232026-06-25Yetter Richard ChristopherDirectorGrant or awardCommon Stock, $0.0001 par value per share0.0 USDUSD30000.00.0 USDOpen filing
2026-06-232026-06-25Chung PatrickDirectorGrant or awardCommon Stock, $0.0001 par value per share0.0 USDUSD30000.00.0 USDOpen filing
2026-06-232026-06-25Persofsky RenahDirectorGrant or awardCommon Stock, $0.0001 par value per share0.0 USDUSD30000.00.0 USDOpen filing
2026-06-232026-06-25Denis MelisaDirectorGrant or awardCommon Stock, $0.0001 par value per share0.0 USDUSD30000.00.0 USDOpen filing
2026-08-082026-08-11Ackerman EricaCAO and Corporate ControllerShares withheld for tax or exercise priceCommon Stock, $0.0001 par value per share1.6 USDUSD138.0220.8 USDOpen filing
2026-08-082026-08-11PARKER MARK SPresidentShares withheld for tax or exercise priceCommon Stock, $0.0001 par value per share1.6 USDUSD740.01184.0 USDOpen filing
2026-10-272026-10-29Yetter Richard ChristopherDirectorGrant or awardCommon Stock, $0.0001 par value per share0.905 USDUSD138121124999.505 USDOpen filing
2026-10-272026-10-29Toler William DouglasChief Executive OfficerGrant or awardCommon Stock, $0.0001 par value per share0.905 USDUSD5524849999.44 USDOpen filing

Showing 14 of 14 matching raw-feed row(s) from the current 365-day research window. Prices and reported values remain in the filing currency and its major unit (for example, UK pence are parsed as GBP). The screen-level $ aggregate is separately FX-normalised for research ranking, not a trade-date conversion.

Model & Sources

Signal history

41.4 / 100

Latest recorded score

↓ -0.2 ptssince the first recorded snapshot on 2026-11-03; 2 calendar days observed
Recorded snapshots
3
First snapshot
2026-11-03

There is not yet a 30-calendar-day comparison; earlier scores are not reconstructed. These are raw signal scores saved when each full scoring run completed. They describe changes in research ranking, not price performance or returns.

Why did it change?

Less than 30 days of comparable history is available, so factor movement is not yet decomposed.

Signal score history

Fixed 0–100 scale; dates are spaced by calendar time.

02550751002026-11-03 · 41.62026-11-04 · 41.42026-11-05 · 41.4Nov 03Nov 04Nov 05

Recent recorded points

  1. 41.6
  2. 41.4
  3. 41.4
View all recorded scores
Snapshot dateSignal score
2026-11-0341.6
2026-11-0441.4
2026-11-0541.4
Why this score? · Model details

Priority = 100 × Σ(fixed weight × 0–1 rule-based input)

FactorWeightThis company inputPoint contribution
15-day buyer breadth (count)35%0.2007.0
Qualified-buy size25%0.1102.8
Role informativeness (inverted)20%0.65013.0
Recency10%0.8618.6
Buy/sell conviction10%1.00010.0

This is a heuristic ordering under the current rules, not a calibrated return forecast. It explains why candidates rank differently; the public-filing evidence and data limits are shown below.

Snapshot & identity

Snapshot date
2026-11-05
Ticker
HYFM
ISIN
—
Sector
Industrials
Industry
—

Company logos by Parqet

How to read Form 4 transaction codes

CodeInterpretationScreen treatment
POpen-market / private purchaseBuy evidence when the security is qualifying equity
SSaleSell evidence when the security is qualifying equity
AGrant / awardContext only
FTax-related withholdingContext only
MOption exerciseContext only
GGiftContext only
J / LOther / non-directionalContext only

P/S rows for options, warrants, compensation units and debt remain visible for audit but are excluded from equity scores and quotes.