Stock Trading Canary

United States · SEC Form 4 · Snapshot date: 2026-10-18 · Built: 2026-10-18 · 中文

← United States · Coverage record

US · SEC FORM 4

Interactive Brokers Group, Inc.

IBKR · Nasdaq · CIK 0001381197 · Financial Services · Capital Markets

INSIDER SIGNAL

No active buy signal

6 qualifying P purchase groups
in the current 180-day scoring window

13 Form 4 transaction lines observed in the same window
1 sales · 6 option, withholding, award, gift or other lines

Last qualifying purchase2026-10-01 · Conkling Lori A · $2.1K

WHY NO ACTIVE SIGNAL?

Purchase activityPresent
Recent buying6 qualifying line group(s)
Recent salesLow
Buy signal statusInactive
Score anatomy

No score is calculated because there is no qualifying purchase in the active window. Unavailable inputs are not treated as zero or as a bearish signal.

ClusterNot calculated
Purchase sizeNot calculated
RoleNot calculated
RecencyNot calculated
ConvictionNot calculated

Why is there no score?

  • No qualifying open-market purchase supplies cluster, size, role, recency or conviction inputs.
  • Sales and other Form 4 activity remain visible as context and do not create a negative score.

Sales and other Form 4 activity are shown separately and do not create a negative buy signal. Absence of buying is not scored as bearish.

Insider activity timeline

Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.

AprMayJunJulAugSepOct
Conkling Lori ADirector
●●●●●●
Nemser Earl HVice Chairman
○○
Mendonca DenisChief Accounting Officer
○
Galik MilanChief Executive Officer
○
Frank Thomas AJExecutive Vice President
○
Brody Paul JonathanChief Financial Officer
○
● Purchase▼ Sale○ Other

Showing the six most active owners; 1 additional owner(s) remain in Form 4 evidence.

Purchase breadth & concentration

QUALIFYING BUYERS1
PURCHASE CONCENTRATION100%Largest buyer: Conkling Lori A · $13.0K
CLUSTER BUYING · 15D1 insiderPeak activity: 2026-05-01–2026-05-01

Roles in the peak window: Director. Concentration uses priced qualifying P lines only and does not change the saved score.

SIGNAL HISTORY

No recorded active-signal snapshot

Scores are archived only when the company qualifies for a published US buy-signal snapshot. Last qualifying purchase: 2026-10-01 · Conkling Lori A.

Recent Form 4 activity

10Purchases
14Sales
32Other Form 4 lines
42SEC filings · 365 days
BUYING6 qualifying P line(s) · 180 days
SELLING1 sale line(s) · context only
OTHER6 exercise / withholding / award / gift / other lines
10b5-1 / PLANNEDNot assessed

P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.

Market context

Market context has not been captured for this ticker yet. The daily market-context job processes the US universe in rotating batches.

Short interest

Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.

Shares short
13,713,846
Previous report
12,396,995
Avg daily volume
3,874,809
Days to cover
3.5

FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.

Historical equity purchases

Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.

Transaction dateReporting ownerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-01Conkling Lori APurchase (P)Class A common stock25USD 85.42USD 2,136SEC filing ↗
2026-09-01Conkling Lori APurchase (P)Class A common stock25USD 94.53USD 2,363SEC filing ↗
2026-08-03Conkling Lori APurchase (P)Class A common stock25USD 87.03USD 2,176SEC filing ↗
2026-07-01Conkling Lori APurchase (P)Class A common stock25USD 88.03USD 2,201SEC filing ↗
2026-06-01Conkling Lori APurchase (P)Class A common stock25USD 86.10USD 2,152SEC filing ↗
2026-05-01Conkling Lori APurchase (P)Class A common stock25USD 79.64USD 1,991SEC filing ↗
2026-04-01Conkling Lori APurchase (P)Class A common stock25USD 68.38USD 1,710SEC filing ↗
2026-03-02Conkling Lori APurchase (P)Class A common stock25USD 69.21USD 1,730SEC filing ↗
2026-02-25Conkling Lori APurchase (P)Class A common stock50USD 73.21USD 3,660SEC filing ↗
2025-10-23Bright JillPurchase (P)Class A common stock400USD 65.95USD 26,380SEC filing ↗
2025-01-31Bright JillPurchase (P)Class A common stock135USD 219.51USD 29,634SEC filing ↗

Form 4 evidence

56 transaction lines in the latest 365-day window; 2,163 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-01Conkling Lori APurchase (P)Class A common stock25USD 85.42USD 2,136SEC filing ↗
2026-09-01Conkling Lori APurchase (P)Class A common stock25USD 94.53USD 2,363SEC filing ↗
2026-08-03Conkling Lori APurchase (P)Class A common stock25USD 87.03USD 2,176SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-01Conkling Lori APurchase (P)Class A common stock25USD 85.42USD 2,136SEC filing ↗
2026-09-01Conkling Lori APurchase (P)Class A common stock25USD 94.53USD 2,363SEC filing ↗
2026-08-03Conkling Lori APurchase (P)Class A common stock25USD 87.03USD 2,176SEC filing ↗
2026-07-31Nemser Earl HAward / grant (A)Class A common stock803,568USD 87.99USD 70,705,948SEC filing ↗
2026-07-01Conkling Lori APurchase (P)Class A common stock25USD 88.03USD 2,201SEC filing ↗
2026-06-01Conkling Lori APurchase (P)Class A common stock25USD 86.10USD 2,152SEC filing ↗
2026-05-08Nemser Earl HTax withholding (F)Class A common stock22,486USD 84.42USD 1,898,268SEC filing ↗
2026-05-08Mendonca DenisTax withholding (F)Class A common stock11,157USD 84.42USD 941,874SEC filing ↗
2026-05-08Galik MilanTax withholding (F)Class A common stock255,039USD 84.42USD 21,530,392SEC filing ↗
2026-05-08Frank Thomas AJTax withholding (F)Class A common stock31,730USD 84.42USD 2,678,647SEC filing ↗
2026-05-08Brody Paul JonathanTax withholding (F)Class A common stock82,920USD 84.42USD 7,000,106SEC filing ↗
2026-05-01Conkling Lori APurchase (P)Class A common stock25USD 79.64USD 1,991SEC filing ↗
2026-04-28Harris Lawrence ESale (S)Class A common stock26,000USD 76.93USD 2,000,180SEC filing ↗
2026-04-01Conkling Lori APurchase (P)Class A common stock25USD 68.38USD 1,710SEC filing ↗
2026-03-02Conkling Lori APurchase (P)Class A common stock25USD 69.21USD 1,730SEC filing ↗
2026-02-25Conkling Lori APurchase (P)Class A common stock50USD 73.21USD 3,660SEC filing ↗
2026-01-27Nemser Earl HSale (S)Class A common stock60,200USD 75.30USD 4,533,133SEC filing ↗
2026-01-26Nemser Earl HSale (S)Class A common stock94,800USD 76.19USD 7,222,778SEC filing ↗
2026-01-23Nemser Earl HSale (S)Class A common stock145,000USD 77.85USD 11,288,682SEC filing ↗
2026-01-22Nemser Earl HSale (S)Class A common stock100,000USD 76.81USD 7,681,000SEC filing ↗
2026-01-01Yuen NicoleAward / grant (A)Class A common stock389USD 64.31USD 25,017SEC filing ↗
2026-01-01Repetto Richard HAward / grant (A)Class A common stock389USD 64.31USD 25,017SEC filing ↗
2026-01-01Peterffy WilliamAward / grant (A)Class A common stock389USD 64.31USD 25,017SEC filing ↗
2026-01-01Nemser Earl HAward / grant (A)Class A common stock389USD 64.31USD 25,017SEC filing ↗
2026-01-01Harris Lawrence EAward / grant (A)Class A common stock389USD 64.31USD 25,017SEC filing ↗
2026-01-01Galik MilanAward / grant (A)Class A common stock389USD 64.31USD 25,017SEC filing ↗
2026-01-01Conkling Lori AAward / grant (A)Class A common stock389USD 64.31USD 25,017SEC filing ↗
2026-01-01Brody Paul JonathanAward / grant (A)Class A common stock389USD 64.31USD 25,017SEC filing ↗
2026-01-01Bright JillAward / grant (A)Class A common stock389USD 64.31USD 25,017SEC filing ↗
2025-12-31Conkling Lori AAward / grant (A)Class A common stock389USD 0.00USD 0SEC filing ↗

Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.

Snapshot & identity

Snapshot date2026-10-18
Ranking versionUS-v1.2
Data qualityPASS ELIGIBLE · —
TickerIBKR
CIK0001381197
SectorFinancial Services
IndustryCapital Markets Yahoo Finance
SEC SIC6211 Security Brokers, Dealers & Flotation Companies
ExchangeNasdaq

Data coverage

Local Form 4 history2,163 transaction lines from 2020-04-23 to 2026-10-01
11 P purchase lines · 1,993 S sale lines · 159 other lines
SEC company submissionsOpen SEC filings ↗

Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.