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Interactive Brokers Group, Inc.

IBKR
Exchange
Nasdaq
Industry
Security Brokers, Dealers & Flotation Companies
SEC CIK
0001381197

In the last 90 days, Interactive Brokers Group, Inc. insiders filed 3 open-market purchases and 0 sales; 1,119 institutions reported holding it in 13F filings for Q2 2026, worth $33.7B in total; 3 superinvestors hold it, including Viking Global Investors and Lone Pine Capital.

Open-market trades, last 90 days

Open-market purchases (P) and sales (S) by Interactive Brokers Group, Inc. insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.

Open-market buys
3 filings
1 insider, $6.74K in total
Open-market sells
0 filings
Insiders trading
1
Net value
+$6.74K
Purchases minus sales

Insider roster

Directors, officers and 10% owners who have filed a Form 4 for Interactive Brokers Group, Inc., current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.

Insider roster for Interactive Brokers Group, Inc.
NameTitleLast reported holdingLast filingFilings, past year
Conkling Lori ADirector2,559Sep 2, 20269
Nemser Earl HVice Chairman803,568IndirectAug 4, 20266
Frank Thomas AJExecutive Vice President251,518May 28, 20262
Brody Paul JonathanChief Financial Officer2,856,806May 28, 20266
Galik MilanChief Executive Officer3,215,389May 28, 20264
Mendonca DenisChief Accounting Officer145,071May 28, 20262
Harris Lawrence EDirector173,482Apr 29, 20266
Bright JillDirector11,082Jan 26, 20263
Peterffy WilliamDirector10,126Jan 26, 20262
Yuen NicoleDirector10,126Jan 26, 20262
Repetto Richard HDirector3,046Jan 26, 20262
Peterffy ThomasChairman1,516,182Feb 24, 20250
Uhde PhilipDirector2,572Jan 9, 20240
Katz GaryDirector1,928Jan 6, 20230
Damgard John M.Director2,188Jan 6, 20220

Insider trades

Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.

Insider trades
Filed (ET)Trade dateFiling delayInsiderTransactionSharesAvg priceValueHolding changeFlags
Sep 2, 2026 (view filing)4:01 PM ETSep 11 dayConkling Lori ADirectorPPurchaseClass A common stock+25$94.53+$2.36K+1.0%2.56K after10b5-1
Aug 4, 2026 (view filing)4:01 PM ETAug 31 dayConkling Lori ADirectorPPurchaseClass A common stock+25$87.03+$2.18K+1.0%2.53K after10b5-1
Jul 1, 2026 (view filing)4:01 PM ETJul 1Same dayConkling Lori ADirectorPPurchaseClass A common stock+25$88.03+$2.20K+1.0%2.51K after10b5-1
Jun 2, 2026 (view filing)Jun 11 dayConkling Lori ADirectorPPurchaseClass A common stock+25$86.10+$2.15K+1.0%2.48K after10b5-1
May 4, 2026 (view filing)May 13 daysConkling Lori ADirectorPPurchaseClass A common stock+25$79.64+$1.99K+1.0%2.46K after10b5-1
Apr 29, 2026 (view filing)Apr 281 dayHarris Lawrence EDirectorSSaleClass A common stock−26.0K$76.93−$2.00M−13.0%173.5K after
Apr 2, 2026 (view filing)Apr 11 dayConkling Lori ADirectorPPurchaseClass A common stock+25$68.38+$1.71K+1.0%2.43K after10b5-1
Mar 26, 2026 (view filing)Feb 25-Mar 229 daysLateConkling Lori ADirectorPPurchaseClass A common stock+75$71.88+$5.39K+3.2%2.41K after2 lots10b5-1
Jan 28, 2026 (view filing)Jan 26-272 daysNemser Earl HVice ChairmanSSaleClass A common stock−155.0K$75.84−$11.8M−100.0%0 after5 lots
Jan 26, 2026 (view filing)Jan 22-234 daysNemser Earl HVice ChairmanSSaleClass A common stock−245.0K$77.43−$19.0M−61.3%155.0K after3 lots
Oct 31, 2025 (view filing)Oct 292 daysHarris Lawrence EDirectorSSaleClass A common stock−10.6K$69.00−$734.5K−5.1%198.7K after
Oct 29, 2025 (view filing)Oct 27-282 daysHarris Lawrence EDirectorSSaleClass A common stock−14.4K$69.45−$997.0K−6.4%209.3K after2 lots
Oct 27, 2025 (view filing)Oct 234 daysBright JillDirectorPPurchaseClass A common stock+400$65.95+$26.4K+4.0%10.3K after
Oct 27, 2025 (view filing)Oct 23-244 daysHarris Lawrence EDirectorSSaleClass A common stock−30.0K$67.86−$2.04M−11.8%223.7K after2 lots
Oct 3, 2025 (view filing)Sep 1914 daysBrody Paul JonathanChief Financial OfficerSSaleClass A common stock−6.93K$64.66−$448.0K−6.4%101.5K afterAmended10b5-1
Oct 1, 2025 (view filing)Sep 29-302 daysBrody Paul JonathanChief Financial OfficerSSaleClass A common stock−21.4K$68.11−$1.45M−75.5%6.93K after5 lots10b5-1
Sep 29, 2025 (view filing)Sep 25-264 daysBrody Paul JonathanChief Financial OfficerSSaleClass A common stock−31.4K$65.34−$2.05M−52.6%28.3K after5 lots10b5-1
Sep 25, 2025 (view filing)Sep 23-242 daysBrody Paul JonathanChief Financial OfficerSSaleClass A common stock−33.4K$65.09−$2.17M−35.9%59.6K after4 lots10b5-1
Sep 23, 2025 (view filing)Sep 19-224 daysBrody Paul JonathanChief Financial OfficerSSaleClass A common stock−15.3K$63.98−$981.5K−14.2%93.1K afterFrom original3 lots10b5-1
Sep 19, 2025 (view filing)Sep 17-182 daysBrody Paul JonathanChief Financial OfficerSSaleClass A common stock−223.4K$63.54−$14.2M−58.4%159.0K after5 lots10b5-1
Sep 17, 2025 (view filing)Sep 15-162 daysBrody Paul JonathanChief Financial OfficerSSaleClass A common stock−195.5K$62.68−$12.3M−33.8%382.3K after5 lots10b5-1
Sep 15, 2025 (view filing)Sep 11-124 daysBrody Paul JonathanChief Financial OfficerSSaleClass A common stock−209.8K$63.62−$13.3M−26.6%577.8K after4 lots10b5-1
Sep 11, 2025 (view filing)Sep 9-102 daysBrody Paul JonathanChief Financial OfficerSSaleClass A common stock−212.4K$62.19−$13.2M−21.2%787.6K after3 lots10b5-1
Aug 15, 2025 (view filing)Aug 141 dayNemser Earl HVice ChairmanSSaleClass A common stock−53.9K$64.00−$3.45M−11.9%400.0K after2 lots10b5-1
Aug 14, 2025 (view filing)Aug 12-132 daysNemser Earl HVice ChairmanSSaleClass A common stock−201.7K$67.39−$13.6M−30.8%453.9K after7 lots10b5-1
Aug 12, 2025 (view filing)Aug 8-114 daysNemser Earl HVice ChairmanSSaleClass A common stock−25.7K$65.88−$1.69M−3.8%655.6K after3 lots10b5-1
Aug 8, 2025 (view filing)Aug 6-72 daysNemser Earl HVice ChairmanSSaleClass A common stock−25.7K$63.72−$1.64M−3.6%681.3K after4 lots10b5-1
Aug 6, 2025 (view filing)Aug 4-52 daysNemser Earl HVice ChairmanSSaleClass A common stock−25.7K$64.17−$1.65M−3.5%707.0K after3 lots10b5-1
Aug 4, 2025 (view filing)Jul 31-Aug 14 daysNemser Earl HVice ChairmanSSaleClass A common stock−27.5K$65.28−$1.79M−3.6%732.6K after6 lots10b5-1
Aug 1, 2025 (view filing)Jul 302 daysNemser Earl HVice ChairmanSSaleClass A common stock−39.8K$66.38−$2.64M−9.9%360.1K after2 lots10b5-1
Jul 30, 2025 (view filing)Jul 282 daysNemser Earl HVice ChairmanSSaleClass A common stock−100$65.90−$6.59K0.0%399.9K after
Feb 4, 2025 (view filing)Jan 314 daysBright JillDirectorPPurchaseClass A common stock+135$219.51+$29.6K+5.8%2.48K after
Feb 23, 2024 (view filing)Feb 21-222 daysNemser Earl HVice ChairmanSSaleClass A common stock−10.0K$105.94−$1.06M−8.4%108.8K after2 lots10b5-1
Feb 20, 2024 (view filing)Feb 15-165 daysNemser Earl HVice ChairmanSSaleClass A common stock−15.0K$104.23−$1.56M−11.2%118.8K after6 lots10b5-1
Feb 15, 2024 (view filing)Feb 13-142 daysNemser Earl HVice ChairmanSSaleClass A common stock−75.0K$101.29−$7.60M−35.9%133.8K after4 lots10b5-1
Feb 7, 2024 (view filing)Feb 5-62 daysFrank Thomas AJChief Information OfficerSSaleClass A common stock−39.9K$95.52−$3.81M−34.2%77.0K after4 lots10b5-1
Feb 6, 2024 (view filing)Feb 2-54 daysNemser Earl HVice ChairmanSSaleClass A common stock−100.0K$96.14−$9.61M−32.4%208.8K after3 lots10b5-1
Feb 5, 2024 (view filing)Feb 1-24 daysFrank Thomas AJChief Information OfficerSSaleClass A common stock−84.5K$93.77−$7.92M−42.0%116.9K after7 lots10b5-1
Feb 1, 2024 (view filing)Jan 302 daysFrank Thomas AJChief Information OfficerSSaleClass A common stock−8.61K$90.18−$776.3K−4.1%201.4K after2 lots10b5-1
Jan 30, 2024 (view filing)Jan 26-294 daysFrank Thomas AJChief Information OfficerSSaleClass A common stock−95.8K$90.95−$8.71M−31.3%210.0K after4 lots10b5-1
Jan 26, 2024 (view filing)Jan 24-252 daysFrank Thomas AJChief Information OfficerSSaleClass A common stock−93.0K$91.19−$8.48M−23.3%305.8K after4 lots10b5-1
Jan 24, 2024 (view filing)Jan 22-232 daysFrank Thomas AJChief Information OfficerSSaleClass A common stock−96.9K$91.09−$8.83M−19.6%398.7K after4 lots10b5-1
Jan 22, 2024 (view filing)Jan 18-194 daysFrank Thomas AJChief Information OfficerSSaleClass A common stock−14.6K$88.73−$1.30M−2.9%495.7K after3 lots10b5-1
Jan 18, 2024 (view filing)Jan 16-172 daysFrank Thomas AJChief Information OfficerSSaleClass A common stock−28.3K$88.53−$2.51M−5.3%510.3K after8 lots10b5-1
Jan 16, 2024 (view filing)Jan 11-125 daysFrank Thomas AJChief Information OfficerSSaleClass A common stock−26.2K$88.01−$2.31M−4.6%538.6K after3 lots10b5-1
Jan 11, 2024 (view filing)Jan 9-102 daysFrank Thomas AJChief Information OfficerSSaleClass A common stock−26.0K$87.19−$2.27M−4.4%564.8K after3 lots10b5-1
Jan 9, 2024 (view filing)Jan 5-84 daysFrank Thomas AJChief Information OfficerSSaleClass A common stock−26.0K$87.40−$2.27M−4.2%590.8K after6 lots10b5-1
Jan 5, 2024 (view filing)Jan 3-42 daysFrank Thomas AJChief Information OfficerSSaleClass A common stock−26.4K$86.73−$2.29M−4.1%616.8K after6 lots10b5-1
Nov 9, 2023 (view filing)Nov 72 daysBrody Paul JonathanChief Financial OfficerSSaleClass A common stock−2.20K$80.89−$178.0K−100.0%0 after2 lots10b5-1
Nov 7, 2023 (view filing)Nov 3-64 daysBrody Paul JonathanChief Financial OfficerSSaleClass A common stock−10.3K$80.19−$824.6K−82.4%2.20K after3 lots10b5-1