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Insider Trading Intelligence
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Earl H. Nemser

IBKR
VICE CHAIRMAN · INTERACTIVE BROKERS GROUP, INC. · CIK 0001391400
FILING MIX · LIFETIME17%/83%
BUYS
19
SELLS
90
TOTAL VALUE
$308.91M
COMPANIES
1
ACTIVE SINCE
Dec 2019
HOLDINGS NOW
429,344
AVG SELL PX
$68.94
TRADE KIND
SHOWING 109 / 109
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
76 backtested trades · 8 horizons · 80 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Earl H. Nemser, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d76+60.53%-0.84%+0.16%-1.00%-0.49%-2.99
14d76+57.89%-1.03%+0.27%-1.30%-2.95%-2.65
30d76+55.26%-0.75%+1.44%-2.19%-2.32%-4.04
60d76+26.32%+3.04%+2.13%+0.91%+1.02%1.43
90d76+7.89%+10.89%+6.76%+4.13%+3.97%5.00
180d76(8 pending)+0.00%+30.07%+11.37%+18.70%+10.14%10.05
1y76(36 pending)+0.00%+64.45%+29.74%+34.72%-3.77%4.07
2y76(36 pending)+0.00%+92.62%+27.12%+65.50%+23.01%5.83
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
IBKR · 429,344 shares · as of May 8, 2026
0250,000500,000750,0001,000,0002020202120222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
2019
2020
2020
2020
2020
2021
2021
2021
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
FLOW · 19 buys / 90 sellsCOVERAGE · 27 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE
Vice Chairman
22,486$84.42$1.90M429,344May 8, 2026May 28, 2026 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE
Vice Chairman
20,469$75.75$1.55M0Jan 27, 2026Jan 28, 2026 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE
Vice Chairman
39,731$75.07$2.98M20,469Jan 27, 2026Jan 28, 2026 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE
Vice Chairman
60,882$75.83$4.62M94,118Jan 26, 2026Jan 28, 2026 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE
Vice Chairman
3,101$77.98$241.8K60,200Jan 26, 2026Jan 28, 2026 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE
Vice Chairman
30,817$76.72$2.36M63,301Jan 26, 2026Jan 28, 2026 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE
Vice Chairman
84,935$77.65$6.60M215,065Jan 23, 2026Jan 26, 2026 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE
Vice Chairman
60,065$78.14$4.69M155,000Jan 23, 2026Jan 26, 2026 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE
Vice Chairman
100,000$76.81$7.68M300,000Jan 22, 2026Jan 26, 2026 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
PURCHASEGRANT
Stock grant
389$64.31$25.0K451,830Jan 1, 2026Jan 26, 2026 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
PURCHASEGRANT
Stock grant
23,240——451,052Dec 31, 2025Jan 7, 2026 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
PURCHASEGRANT
Stock grant
389$64.31$25.0K451,441Dec 31, 2025Jan 7, 2026 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE10b5-1
10b5-1 plan
20,521$64.22$1.32M400,000Aug 14, 2025Aug 15, 2025 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE10b5-1
10b5-1 plan
33,379$63.86$2.13M420,521Aug 14, 2025Aug 15, 2025 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE10b5-1
10b5-1 plan
200$66.09$13.2K456,500Aug 13, 2025Aug 14, 2025 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE10b5-1
10b5-1 plan
200$64.19$12.8K456,700Aug 13, 2025Aug 14, 2025 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE10b5-1
10b5-1 plan
2,400$66.77$160.2K454,100Aug 13, 2025Aug 14, 2025 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE10b5-1
10b5-1 plan
200$67.20$13.4K453,900Aug 13, 2025Aug 14, 2025 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE10b5-1
10b5-1 plan
4,600$63.75$293.3K456,900Aug 13, 2025Aug 14, 2025 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE10b5-1
10b5-1 plan
153,000$67.39$10.31M502,586Aug 12, 2025Aug 14, 2025 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE10b5-1
10b5-1 plan
41,086$67.88$2.79M461,500Aug 12, 2025Aug 14, 2025 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE10b5-1
10b5-1 plan
12,841$66.09$848.7K655,586Aug 11, 2025Aug 12, 2025 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE10b5-1
10b5-1 plan
10,200$65.60$669.1K671,068Aug 8, 2025Aug 12, 2025 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE10b5-1
10b5-1 plan
2,641$65.94$174.1K668,427Aug 8, 2025Aug 12, 2025 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE10b5-1
10b5-1 plan
12,400$63.94$792.9K681,709Aug 7, 2025Aug 8, 2025 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE10b5-1
10b5-1 plan
441$64.35$28.4K681,268Aug 7, 2025Aug 8, 2025 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE10b5-1
10b5-1 plan
12,641$63.47$802.3K694,309Aug 6, 2025Aug 8, 2025 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE10b5-1
10b5-1 plan
200$64.16$12.8K694,109Aug 6, 2025Aug 8, 2025 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE10b5-1
10b5-1 plan
1,800$64.84$116.7K706,950Aug 5, 2025Aug 6, 2025 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE10b5-1
10b5-1 plan
11,041$63.64$702.6K708,750Aug 5, 2025Aug 6, 2025 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE10b5-1
10b5-1 plan
12,841$64.54$828.8K719,791Aug 4, 2025Aug 6, 2025 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE10b5-1
10b5-1 plan
1,000$65.66$65.7K732,632Aug 1, 2025Aug 4, 2025 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE10b5-1
10b5-1 plan
7,441$63.94$475.8K736,832Aug 1, 2025Aug 4, 2025 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE10b5-1
10b5-1 plan
1,200$62.79$75.3K744,273Aug 1, 2025Aug 4, 2025 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE10b5-1
10b5-1 plan
3,200$64.71$207.1K733,632Aug 1, 2025Aug 4, 2025 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE10b5-1
10b5-1 plan
2,200$66.71$146.8K745,473Jul 31, 2025Aug 4, 2025 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE10b5-1
10b5-1 plan
12,441$66.18$823.3K747,673Jul 31, 2025Aug 4, 2025 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
PURCHASEGRANT
Stock grant
400,000$66.22$26.49M760,114Jul 30, 2025Aug 1, 2025 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE10b5-1
10b5-1 plan
32,386$66.32$2.15M367,514Jul 30, 2025Aug 1, 2025 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE10b5-1
10b5-1 plan
7,400$66.64$493.1K360,114Jul 30, 2025Aug 1, 2025 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE
Vice Chairman
100$65.90$6.6K399,900Jul 28, 2025Jul 30, 2025 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALEGRANT
Gift
500——427,812Jun 23, 2025Jun 24, 2025 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE
Vice Chairman
5,178$185.60$961.0K107,078May 9, 2025Jun 3, 2025 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE
Vice Chairman
5,178$185.60$961.0K107,078May 9, 2025Jun 4, 2025 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
PURCHASEGRANT
Stock grant
142$176.67$25.1K112,256Dec 31, 2024Jan 7, 2025 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
PURCHASEGRANT
Stock grant
7,763——112,114Dec 31, 2024Jan 7, 2025 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
PURCHASEGRANT
Stock grant
100,000$118.57$11.86M100,000Jul 25, 2024Jul 29, 2024 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE
Vice Chairman
4,419$119.13$526.4K104,351May 9, 2024May 24, 2024 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE10b5-1
10b5-1 plan
5,000$107.01$535.0K108,770Feb 22, 2024Feb 23, 2024 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE10b5-1
10b5-1 plan
5,000$104.86$524.3K113,770Feb 21, 2024Feb 23, 2024 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE10b5-1
10b5-1 plan
2,094$106.01$222.0K118,770Feb 16, 2024Feb 20, 2024 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE10b5-1
10b5-1 plan
2,906$105.35$306.1K120,864Feb 16, 2024Feb 20, 2024 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE10b5-1
10b5-1 plan
4,000$104.92$419.7K123,770Feb 15, 2024Feb 20, 2024 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE10b5-1
10b5-1 plan
3,400$102.83$349.6K128,270Feb 15, 2024Feb 20, 2024 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE10b5-1
10b5-1 plan
2,100$102.02$214.2K131,670Feb 15, 2024Feb 20, 2024 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE10b5-1
10b5-1 plan
500$103.57$51.8K127,770Feb 15, 2024Feb 20, 2024 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE10b5-1
10b5-1 plan
10,650$101.28$1.08M148,120Feb 14, 2024Feb 15, 2024 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE10b5-1
10b5-1 plan
14,350$102.09$1.46M133,770Feb 14, 2024Feb 15, 2024 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE10b5-1
10b5-1 plan
29,191$101.31$2.96M158,770Feb 13, 2024Feb 15, 2024 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE10b5-1
10b5-1 plan
20,809$100.73$2.10M187,961Feb 13, 2024Feb 15, 2024 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE10b5-1
10b5-1 plan
1,235$96.45$119.1K208,770Feb 5, 2024Feb 6, 2024 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE10b5-1
10b5-1 plan
24,547$95.67$2.35M210,005Feb 5, 2024Feb 6, 2024 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE10b5-1
10b5-1 plan
74,218$96.29$7.15M234,552Feb 2, 2024Feb 6, 2024 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
PURCHASEGRANT
Stock grant
14,780——308,468Dec 31, 2023Jan 5, 2024 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
PURCHASEGRANT
Stock grant
302$82.90$25.0K308,770Dec 31, 2023Jan 5, 2024 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALEGRANT
Gift
800——293,688Dec 6, 2023Dec 8, 2023 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
PURCHASE
Vice Chairman
174,822$86.85$15.18M294,488Aug 10, 2023Sep 13, 2023 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE
Vice Chairman
174,822$86.85$15.18M0Aug 10, 2023Sep 13, 2023 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE
Vice Chairman
221,178$86.85$19.21M174,822Aug 9, 2023Sep 13, 2023 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
PURCHASEGRANT
Stock grant
396,000$86.85$34.39M396,000Jul 27, 2023Jul 31, 2023 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE
Vice Chairman
3,052$77.99$238.0K119,666May 9, 2023Jun 6, 2023 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE
Vice Chairman
2,271$77.99$177.1K120,447May 9, 2023May 26, 2023 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
PURCHASEGRANT
Stock grant
14,954——122,372Dec 31, 2022Jan 6, 2023 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
PURCHASEGRANT
Stock grant
346$72.35$25.0K122,718Dec 31, 2022Jan 6, 2023 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALEGRANT
Gift
1,250——107,418Oct 19, 2022Oct 21, 2022 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE
Vice Chairman
2,554$52.62$134.4K108,668May 9, 2022May 25, 2022 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
PURCHASEGRANT
Stock grant
191——111,222Apr 25, 2022Apr 27, 2022 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
PURCHASEGRANT
Stock grant
315$79.42$25.0K111,031Dec 31, 2021Jan 6, 2022 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
PURCHASEGRANT
Stock grant
12,967——110,716Dec 31, 2021Jan 6, 2022 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE
Vice Chairman
2,097$69.60$146.0K97,749May 7, 2021May 24, 2021 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
PURCHASEGRANT
Stock grant
14,295——99,846Dec 31, 2020Jan 7, 2021 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE
Vice Chairman
41,114$48.82$2.01M0Oct 2, 2020Oct 5, 2020 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE
Vice Chairman
1,000$48.97$49.0K41,114Sep 23, 2020Sep 24, 2020 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE
Vice Chairman
38,500$48.56$1.87M42,114Sep 22, 2020Sep 24, 2020 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE
Vice Chairman
16,200$48.03$778.1K80,614Sep 18, 2020Sep 21, 2020 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE
Vice Chairman
8,100$47.79$387.1K96,814Sep 17, 2020Sep 21, 2020 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE
Vice Chairman
20,255$47.71$966.4K104,914Sep 16, 2020Sep 17, 2020 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE
Vice Chairman
11,700$47.90$560.4K125,169Sep 14, 2020Sep 15, 2020 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE
Vice Chairman
11,400$47.66$543.3K136,869Sep 11, 2020Sep 15, 2020 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE
Vice Chairman
300$48.00$14.4K148,269Sep 10, 2020Sep 11, 2020 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE
Vice Chairman
9,600$48.38$464.4K148,569Sep 9, 2020Sep 11, 2020 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE
Vice Chairman
14,005$49.63$695.1K158,769Sep 8, 2020Sep 9, 2020 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE
Vice Chairman
600$50.59$30.4K158,169Sep 8, 2020Sep 9, 2020 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE
Vice Chairman
15,895$48.87$776.8K172,774Sep 8, 2020Sep 9, 2020 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE
Vice Chairman
20,127$51.93$1.05M191,669Sep 4, 2020Sep 9, 2020 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE
Vice Chairman
3,000$53.44$160.3K188,669Sep 4, 2020Sep 9, 2020 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE
Vice Chairman
3,300$53.34$176.0K211,796Sep 3, 2020Sep 4, 2020 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE
Vice Chairman
40,500$52.62$2.13M215,096Sep 3, 2020Sep 4, 2020 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE
Vice Chairman
55,497$53.29$2.96M255,596Sep 2, 2020Sep 4, 2020 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE
Vice Chairman
52,603$53.17$2.80M311,093Sep 1, 2020Sep 2, 2020 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE
Vice Chairman
62,500$53.20$3.33M363,696Aug 31, 2020Sep 2, 2020 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE
Vice Chairman
200,373$53.23$10.67M426,196Aug 28, 2020Aug 31, 2020 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE
Vice Chairman
130,581$53.01$6.92M626,569Aug 27, 2020Aug 31, 2020 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE
Vice Chairman
156,869$52.60$8.25M757,150Aug 26, 2020Aug 27, 2020 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE
Vice Chairman
40,147$51.95$2.09M914,019Aug 25, 2020Aug 26, 2020 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE
Vice Chairman
45,834$51.93$2.38M954,166Aug 24, 2020Aug 26, 2020 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
PURCHASEGRANT
Stock grant
1,000,000$52.27$52.27M1,000,000Aug 20, 2020Aug 24, 2020 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
SALE
Vice Chairman
1,939$41.13$79.8K85,551May 8, 2020Jun 1, 2020 ↗View →
IBKR
INTERACTIVE BROKERS GROUP, INC.
PURCHASEGRANT
Stock grant
11,679——87,490Dec 31, 2019Jan 3, 2020 ↗View →
Other insiders · IBKR
Loading peer insiders…
About this filer
CIK 0001391400
ROLE
Vice Chairman
PRIMARY
IBKR
COMPANIES
1
ACTIVE SINCE
Dec 2019
MARKETPEEL · /INSIDER/0001391400DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
FREE · DAILY · 6 AM ET

The morning brief, before the bell.

One short email. Insider buys, congressional trades, and plain-English analysis.

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