| Period | Completed events | Price coverage | Hit rate | Median excess return | Average excess return | Worst excess return |
|---|---|---|---|---|---|---|
| 5D | 9Developing evidence | 100.0% (9/9) | 55.6% (5/9) | +0.2% | +0.5% | -3.0% |
| 20D | 8Developing evidence | 100.0% (8/8) | 50.0% (4/8) | -1.5% | -0.6% | -5.2% |
| 60D | 8Developing evidence | 100.0% (8/8) | 25.0% (2/8) | -0.6% | +0.0% | -5.2% |
| 120D | 7Developing evidence | 100.0% (7/7) | 57.1% (4/7) | +1.2% | +9.7% | -1.1% |
COMPANY RESEARCH
Gresham House Energy Storage Fund PLC
GRID.L · United Kingdom · Closed-End Funds · Asset Management
INSIDER SIGNAL
Insider activity score：73.3 / 100
4 insiders · 4 purchase events · €65k net purchases
Europe #31 · United Kingdom #10
WHY THIS SIGNAL?
Score anatomy
Each bar shows the contribution to the current score; the weights and formula stay unchanged.
Cluster+35.0 / 35
How many distinct insiders bought in the cluster
Purchase size+17.9 / 25
Purchase value relative to company size and liquidity
Role+13.0 / 20
The seniority and relevance of participating insiders
Recency+3.3 / 10
How recently the purchases occurred
Conviction+10.0 / 10
How clearly buying stands out from other activity
What is holding the score back?
- ⚠ Insider role contributes less on the current role scale
- ⚠ Purchase activity is becoming less recent
- ✓ Broad buyer cluster · 4+ distinct filers
The role contribution uses the inverted role input of the current European model.
Buying concentration
36%
Largest buyer：Mak Lo Chiu · 20k GBP
Gross qualified purchase transaction-line value：55k GBP
The headline € total is net buying for the screen; this module uses gross qualified purchase transaction-line values in the filing currency, so the amounts can differ. The current 15-day buyer-breadth input counts distinct buyers; value concentration is disclosed separately here.
This is a ranking under the current European screening rules—not a probability of gain, return forecast, or buy recommendation.
Key purchase quotes (filing currency)
| Filer | Price per unit | Trade date |
|---|---|---|
| Catherine Pitt | 0.9698–0.9699 GBP | Oct 1, 2026 |
| Mak Lo Chiu | 0.98298 GBP | Sep 25, 2026 |
| John Stephen Leggate | 0.974499 GBP | Sep 23, 2026 |
Model details
Cluster breakdown (does not change the score)
- 15-day buyer breadth (count)
- 4 distinct reported filers
- Peak time window
- 2026-09-23 to 2026-10-01
- Current breadth input
- 1.000 (capped at 4+ buyers)
- Buyer independence
- Not yet measured; related-party fields are not cross-market comparable
What the filings show
- 🟢 Recent eligible purchase
Catherine Pitt · 14k GBP · Price 0.9698–0.9699 GBP · Oct 1, 2026 - 🟢 PDMR purchase
Mak Lo Chiu · 20k GBP · Price 0.98298 GBP · Sep 25, 2026 - 🟢 PDMR purchase
John Stephen Leggate · 12k GBP · Price 0.974499 GBP · Sep 23, 2026 - 🟡 1 remaining qualified transaction line(s) across 1 disclosure(s)
Insider vs stock price
4 purchase day(s), 6 purchase line(s) in the 180-day window.
Daily close (GBp)Day with an insider purchase
Markers sit on the closing price of the transaction day. They show when insiders traded, not the price they paid or received. "Since" compares that day's close with the last close shown; it is what happened at this company, not a forecast.
If you had followed the purchase
Each row starts on the first close on or after the day a purchase was made public, the earliest a reader could have acted, and ends on the last close shown above.
| Made public | Insiders | In this stock, now | In the median peer stock, now | Difference |
|---|---|---|---|---|
| 2026-09-23 | 1 | 990 −1.0% | 998 −0.2% | −8 −0.8 pts |
| 2026-09-24 | 1 | 978 −2.2% | 1,000 +0.0% | −22 −2.2 pts |
| 2026-09-25 | 1 | 986 −1.4% | 1,000 +0.0% | −14 −1.4 pts |
| 2026-10-01 | 1 | 1,002 +0.2% | 1,010 +1.0% | −8 −0.8 pts |
0 of 4 disclosure day(s) ended ahead of the median peer stock.
Close to close, before costs, taxes, dividends and currency moves. The peer is the median of the other stocks on the same exchange for which this site holds prices (84 here), not an index. This is what happened, not a forecast: across all purchases on this site the typical gap is close to zero.
Insider timeline
4 insiders bought within 9 days, 23 Sep to 1 Oct: 3 Board member, 1 Associated person. The share closed at 97.00 on the first of those days and at 96.00 most recently (−1.0%). That week 179 companies across Europe disclosed insider purchases, an ordinary week (16 of the last 26).
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.
▮Purple band: several insiders bought within 15 days
The band marks the stretch with the most different buyers: at most 15 days long and at least two people. Here it is 23 Sep – 1 Oct, with 4 insiders. Only the strongest stretch is marked. Several people deciding the same thing is harder to explain by one person's private reasons, but insiders often buy together just after a closed period ends, so compare it with the grey weekly bars.
Blue line: this share's price, +26.0% over these six months
The closing price of each day, from 76.20 on 2026-04-21 to 96.00 on 2026-10-16. 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, +2.7%
Taken from the 491 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 +26.0%, the typical one +2.7%, 23.3 points ahead. It is not an index and not a comparison within one industry.
▂Grey bars: companies across Europe disclosing purchases each week
A taller bar is a week in which more companies disclosed insider purchases. The purple bar is the week of the band above: 179 companies, number 16 of the last 26 weeks. If that week was a peak anyway, buying together is less special than it looks.
This company: insiders buying per month, last 12 months
Nov
Dec
Jan
Feb
2Mar
Apr
May
Jun
Jul
Aug
3Sep
1Oct
Darker bars are inside the 180-day window above.
Who traded
| Insider | Role | Purchases | Sales | Bought | First purchase | Share price since | Earlier purchases |
|---|---|---|---|---|---|---|---|
| John Stephen Leggate | Board member | 1 | — | 12.0k GBP | 2026-09-23 | −1.0% | fewer than 5 completed |
| David Stevenson | Board member | 1 | — | 8.4k GBP | 2026-09-24 | −2.2% | fewer than 5 completed |
| Catherine Pitt | Board member | 1 | — | 14.4k GBP | 2026-10-01 | +0.2% | fewer than 5 completed |
| Mak Lo Chiu | Associated person | 1 | — | 19.9k GBP | 2026-09-25 | −1.4% | 8 completed, median −0.6% against peers after 60 sessions |
Why this score? · Model details
Priority = 100 × Σ(fixed weight × 0–1 rule-based input)
| Factor | Weight | This company input | Point contribution |
|---|---|---|---|
| 15-day buyer breadth (count) | 35% | 1.000 | 35.0 |
| Qualified-buy size | 25% | 0.718 | 17.9 |
| Role informativeness (inverted) | 20% | 0.350 | 7.0 |
| Recency | 10% | 0.330 | 3.3 |
| Buy/sell conviction | 10% | 1.000 | 10.0 |
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.
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.
Since 2026-10-13: no longer on the bull side: bought in the last two weeks. All bull and bear lists, and what followed each line in the past →
Where the evidence comes from
Independent evidence does not object: the purchases themselves carry bull lines (several insiders together, more buyers than usual here); share price and trading, short sellers, company actions were checked and none crosses a bear threshold. No data is held for: company results.
- The insider purchases themselvesBullseveral insiders together, more buyers than usual here Bearsmall purchases, buyer's past purchases trailed the benchmark4 checked, under the threshold · 2 missing
- Share price and trading3 checked, under the threshold
- Short sellers1 checked, under the threshold
- Company results1 missing
- Company actions1 checked, under the threshold
Bull case · the buying is informative
- 4 insiders bought within 15 days (2026-09-23 to 2026-10-01). Several people reaching the same decision at the same time is hard to put down to one person's circumstances.Record: after 5,401 earlier disclosures like this, the median 60-session excess return was −3.3%, within 1 percentage point of all comparable disclosures (−3.3%).
- 4 insiders bought in the last 180 days against 2 in the 180 days before: more than this company's own recent norm.Record: after 3,134 earlier disclosures like this, the median 60-session excess return was −2.7%, within 1 percentage point of all comparable disclosures (−2.7%).
Bear case · discount it
- Net purchases of €65k are <0.01% of the company's market value (€654.8M): a visible sum, a small one against the business.
- The 8 earlier purchases by Mak Lo Chiu trailed FTSE 100 by a median 0.59% over the following 60 trading days.
Evidence still missing
- 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.
- European notifications have no field saying whether a purchase was pre-arranged; there is no counterpart to the US 10b5-1 box. None of the 6 purchase lines mentions a plan, but a bare “Acquisition of Shares” does not rule one out.
- The filings give the size of each trade, not what the buyer already held. Whether a purchase added 1% to a personal stake or doubled it is not known.
Checked and under the threshold: 9, 1 close to it
- EitherThe latest purchase is 16 days old. Bull up to 14 days, bear from 90. close to the threshold
- BearThe largest buyer accounts for 36% of the value bought. Counted for the bear side from 80%.
- Bear0 of 4 buyers filed as a person closely associated with a manager. Counted for the bear side from half.
- BearNo insider sale is recorded in the same 180 days.
- BearThe share price changed +28% over six months (three months +1.1%, one month −1.8%) and stands 8.1% below its 52-week high. Counted for the bear side from a fall of 20%.
- BearOver three months the share price changed +1.1% and the median of 159 Closed-End Funds companies changed +1.0%: ahead by 0 points. Counted for the bear side from 20 points behind.
- BearThe register of FCA shows no published net short position in this company.
- BullThe company announced no transaction in its own shares in the last 30 days.
- BearAbout €760k of the stock changes hands on an average day. Counted for the bear side below €500k.
Both columns arrange stored facts only. They do not change the insider score or the ranking and are not investment advice.
Signal history
73.3 / 100
Latest recorded score
↑ +20.3 ptssince the first recorded snapshot on 2026-09-23; 25 calendar days observed
- Recorded snapshots
- 21
- First snapshot
- 2026-09-23
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.
Recent recorded points
- 53.0
- 71.3
- 77.5
- 74.6
- 73.3
View all recorded scores
| Snapshot date | Signal score |
|---|---|
| 2026-09-23 | 53.0 |
| 2026-09-24 | 64.3 |
| 2026-09-25 | 74.2 |
| 2026-09-28 | 72.3 |
| 2026-09-29 | 71.8 |
| 2026-09-30 | 71.3 |
| 2026-10-01 | 79.9 |
| 2026-10-02 | 79.3 |
| 2026-10-03 | 79.3 |
| 2026-10-04 | 79.3 |
| 2026-10-05 | 77.5 |
| 2026-10-06 | 77.0 |
| 2026-10-07 | 76.6 |
| 2026-10-08 | 76.1 |
| 2026-10-09 | 75.7 |
| 2026-10-12 | 74.6 |
| 2026-10-13 | 74.3 |
| 2026-10-14 | 74.0 |
| 2026-10-15 | 73.7 |
| 2026-10-16 | 73.5 |
| 2026-10-18 | 73.3 |
Sector context
- Buying breadth
- 9.7% (21 / 216 issuers)
- Sector rank
- #4 / 12
- 7D breadth change
- +0.0 pp · vs 2026-10-12 (6d)
- 30D breadth change
- History building
This is sector-level research context. It does not affect the Insider Signal or ranking.
Insider profile outcomes
Historical performance following insider filings. The company role is translated below each name while preserving the original title.
- Excess return = stock return − FTSE 100 return over the same period.
- Hit rate = completed events with positive excess return ÷ total completed events.
- Price coverage = valid point-in-time prices ÷ events mature enough for that period.
- Returns start on the first shared trading session on or after publication.
- Small-sample rule: n<5 is shown for transparency and is not scored.
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.
| Period | Completed events | Price coverage | Hit rate | Median excess return | Average excess return | Worst excess return |
|---|---|---|---|---|---|---|
| 5D | 3Small sample | 100.0% (3/3) | 66.7% (2/3) | +0.3% | -0.1% | -4.8% |
| 20D | 2Small sample | 100.0% (2/2) | 50.0% (1/2) | +0.0% | +0.0% | -5.5% |
| 60D | 2Small sample | 100.0% (2/2) | 50.0% (1/2) | +2.3% | +2.3% | -0.0% |
| 120D | 2Small sample | 100.0% (2/2) | 100.0% (2/2) | +39.4% | +39.4% | +23.3% |
| Period | Completed events | Price coverage | Hit rate | Median excess return | Average excess return | Worst excess return |
|---|---|---|---|---|---|---|
| 5D | 2Small sample | 100.0% (2/2) | 0.0% (0/2) | -2.4% | -2.4% | -4.7% |
| 20D | 1Small sample | 100.0% (1/1) | 0.0% (0/1) | -6.5% | -6.5% | -6.5% |
| 60D | 1Small sample | 100.0% (1/1) | 100.0% (1/1) | +2.8% | +2.8% | +2.8% |
| 120D | 1Small sample | 100.0% (1/1) | 100.0% (1/1) | +22.2% | +22.2% | +22.2% |
Market context
PRICE PERFORMANCE
VOLATILITY & LIQUIDITY
- Volatility
- 25.8%
- Beta
- —
- Avg daily volume
- £484,566.7
VALUATION
- Market cap
- £552.6M
- P/E
- 4.0×
FUNDAMENTALS
- Profit margin
- —
- ROE
- —
- Industry
- —
Prices to 18 Oct 2026: price cache (Yahoo Chart/risk profile). From OpenBB/yfinance, captured 15 Oct 2026: Market cap, P/E. It does not affect the insider score or rank.
Disclosed net short positions
The FCA register, read 18 Oct 2026, publishes no aggregate net short position for this issuer.
Short-position disclosures are external context; they do not affect the insider score, ranking, or filing eligibility.
Insiders' buying price vs the latest close
Insiders paid 0.8223 GBP a share on average (8 purchase lines, 4 buyers, 2026-03-20 – 2026-10-01). The close on 2026-10-16 was 16.7% above that price.
The latest purchase (2026-10-01) was at 0.9698 GBP; the close was 1.0% 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
0.43% · of estimated traded value in the same period
2026-09-21 – 2026-10-16 · 20 recorded trading sessions
- Disclosed qualifying purchases
- 54,740 GBP
- Estimated market traded value
- 12,819,399 GBP
Market-data coverage: 514 verified sessions · Latest session: 2026-10-16 · Ratio status: Available
Recent and largest purchase events / preceding 60-session ADTV
- Oct 01 · Catherine Pitt · PDMR Non-Executive Director14,402 GBP · 3.56%404,359 GBP ADTV
- Sep 25 · Mak Lo Chiu · PCA of Isabel Liu, Non-Executive Director of the Company and PDMR19,856 GBP · 5.05%392,991 GBP ADTV
- Sep 24 · David Stevenson · PDMR Non-Executive Director8,446 GBP · 2.09%403,197 GBP ADTV
- Sep 23 · John Stephen Leggate · PDMR Non-Executive Director12,035 GBP · 2.89%417,034 GBP ADTV
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.
Latest news
No news has been captured for this company.
Regulatory filings
- Insider filing announcement · published 2026-10-01 · trade date 2026-10-01
- Insider filing announcement · published 2026-09-25 · trade date 2026-09-25
- Insider filing announcement · published 2026-09-24 · trade date 2026-09-24
Unfold all 8 filings
- Insider filing announcement · published 2026-10-01 · trade date 2026-10-01
- Insider filing announcement · published 2026-09-25 · trade date 2026-09-25
- Insider filing announcement · published 2026-09-24 · trade date 2026-09-24
- Insider filing announcement · published 2026-09-23 · trade date 2026-09-23
- Insider filing announcement · published 2026-03-23 · trade date 2026-03-23
- Insider filing announcement · published 2026-03-23 · trade date 2026-03-23
- Insider filing announcement · published 2026-03-20 · trade date 2026-03-20
- Insider filing announcement · published 2026-03-19 · trade date 2026-03-19
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
8 qualifying purchase disclosure(s) · 8 transaction line(s)
Oct 1, 2026Acquisition of Shares
Catherine Pitt · PDMR Non-Executive Director
Ordinary Shares of 1 pence each · 5240 shares × 0.9698 GBP · —
Open filingOct 1, 2026Acquisition of Shares
Catherine Pitt · PDMR Non-Executive Director
Ordinary Shares of 1 pence each · 5000 shares × 0.9698 GBP · —
Open filingOct 1, 2026Acquisition of Shares
Catherine Pitt · PDMR Non-Executive Director
Ordinary Shares of 1 pence each · 4610 shares × 0.9699 GBP · —
Open filingUnfold all 5 remaining filing row(s)
| Transaction date | Published | Filer | Role | Transaction | Instrument | Price (local currency) | Quote currency | Volume | Source |
|---|---|---|---|---|---|---|---|---|---|
| 2026-09-25 | 2026-09-25 | Mak Lo Chiu | PCA of Isabel Liu, Non-Executive Director of the Company and PDMR | Acquisition of Shares | Ordinary Shares of 1 pence each | 0.98298 GBP | GBP | 20200 | Open filing |
| 2026-09-24 | 2026-09-24 | David Stevenson | PDMR Non-Executive Director | Acquisition of Shares | Ordinary Shares of 1 pence each | 0.981 GBP | GBP | 8610 | Open filing |
| 2026-09-23 | 2026-09-23 | John Stephen Leggate | PDMR Non-Executive Director | Acquisition of Shares | Ordinary Shares of 1 pence each | 0.974499 GBP | GBP | 12350 | Open filing |
| 2026-03-23 | 2026-03-23 | John Stephen Leggate | PDMR Non-Executive Director | Acquisition of Shares | Ordinary Shares of 1 pence each | 0.75025 GBP | GBP | 111341 | Open filing |
| 2026-03-20 | 2026-03-20 | David Stevenson | PDMR Non-Executive Director | Acquisition of Shares | Ordinary Shares of 1 pence each | 0.7717 GBP | GBP | 12894 | Open filing |
Showing 8 of 8 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 2 other transaction(s)
Mar 23, 2026Disposal of Shares
John Stephen Leggate · PDMR Non-Executive Director
Ordinary Shares of 1 pence each · 111341 shares × 0.75 GBP · —
Open filingMar 19, 2026Disposal of Shares
Duncan John Neale · PDMR Non Executive Director
Ordinary Shares of 1 pence each · 13500 shares × 0.7525 GBP · —
Open filingShowing 2 of 2 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.
Snapshot & identity
- Snapshot date
- 2026-10-18
- Ticker
- GRID.L
- ISIN
- GB00BFX3K770
- Sector
- Closed-End Funds
- Industry
- Asset Management
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