Nemser Earl H

Vice Chairman Nemser sells entire 155,000 share position for $11.8M across 5 transactions Jan 26–27, 2026.

Nemser Earl H, Vice Chairman of Interactive Brokers Group (IBKR), executed 5 separate sales totaling 155,000 shares (155.0K shares) for $11,755,911.20 ($11.8M) on January 26–27, 2026, eliminating his entire holding. The transactions were priced at a blended average of $75.84, near the current price of $75.45 and within the 52-week range, with the most recent sales occurring around the 52-week high of $77.58. IBKR's fundamentals show robust near-term performance (30-day change: +15.5%; 90-day change: +10.1%; annual revenue growth +19.5%) and extremely low valuation (P/E: 0.77), suggesting a profitable and growing business. The timing of a complete liquidation by a senior executive merits scrutiny, particularly the concentrated execution over two consecutive trading days. Nemser's cross-ticker track record shows a 0.00% well-timed rate on 20 prior sells with a modest 90-day average return of +9.2%, while his two most recent IBKR-specific measurable outcomes (August 2025) posted +13.2% and +13.8% 90-day returns, indicating his prior IBKR sales preceded substantial gains. The complete exit and rapid execution pattern are material signals warranting investor attention.

Vice Chairman Nemser Earl H sold 245,000 shares for $18,969,681.85 in 3 transactions (Jan 22-23), reducing holdings by 61.2% to 155,000 shares.

Vice Chairman Nemser Earl H executed 3 separate sales totaling 245,000 shares for $18,969,681.85 at prices ranging from $76.81 to $78.14, reducing his position from 400,000 to 155,000 shares—a 61.2% reduction in holdings. The transactions occurred near the stock's 52-week high of $77.58, with the blended average sale price of $77.43 just 1.4% below the high and 2.8% above the current price of $75.35. His prior trades at IBKR showed 0 of 2 measurable sells well-timed at the 90-day mark, with subsequent 90-day returns of +13.2% and +13.8%, meaning shares sold in August 2025 appreciated afterward. The company's fundamentals remain robust, with $1.2B net income on $1.7B quarterly revenue and +19.5% annual revenue growth, though a P/E of 0.77 is unusually low and warrants verification of financial reporting integrity. The substantial proportion of his wealth exiting at cyclical highs, combined with a historical pattern of missed upside at this ticker, merits close attention to whether this sale reflects updated views on valuation or capital reallocation rather than scheduled plan activity.

VP Nemser sells 53,900 IBKR shares for $3.4M on strong momentum (+21.1% in 90 days)

Nemser Earl H, Vice Chairman of Interactive Brokers Group, filed two separate sales totaling 53,900 shares for $3,449,441.56 at a blended average price of $64.00 on 2025-08-14. This represents an 11.9% reduction in his post-transaction holdings to 400,000 shares. The transaction occurred after a significant 90-day rally (+21.1%) and within 0.5% of the 52-week high of $67.63, near the upper end of recent momentum. His cross-ticker track record shows 20 prior open-market sells across all holdings. At IBKR specifically, he executed five separate sells on 2025-08-13 (the prior trading day), establishing a concentrated selling pattern; outcomes on those trades are not yet measurable. The sale reduces but does not eliminate his substantial equity stake in the company, and the timing comes during a period of strong absolute and relative stock performance.

Vice Chairman Nemser sold 201,686 shares for $13,592,581.68 across 7 transactions, reducing holdings by 30.8%

Earl H Nemser, Vice Chairman of Interactive Brokers Group, executed 7 separate sales totaling 201,686 shares (201.7K shares) for $13,592,581.68 ($13.6M) on 2025-08-12 and 2025-08-13, with a blended average price of $67.39. This represents a substantial reduction in his stake—he sold 30.8% of his pre-transaction holdings of 655,586 shares (655.6K shares), leaving 453,900 shares (453.9K shares) post-transaction. The sales occurred near the 52-week high of $67.63, and the current price of $63.92 reflects a -5.5% decline from that peak. The multi-tranche execution across consecutive trading days, combined with the magnitude of the reduction and proximity to the 52-week high, warrants investor attention as a significant insider reduction event. The company's fundamentals remain solid (Net income $1,006,000,000.00, annual revenue growth of +19.5%, P/E of 0.72), but the large discretionary liquidation by a senior executive is material information for shareholders.

Vice Chairman Nemser sells 25,682 shares (3 transactions) for $1,691,929.23 at IBKR near 52-week high ($67.63).

Earl H Nemser, Vice Chairman of Interactive Brokers Group, executed 3 separate sales totaling 25,682 shares for $1,691,929.23 across two trading days (Aug 8–11, 2025) at prices ($65.60, $65.94, $66.09) that cluster near the current price of $67.63, which marks the 52-week high. His holdings declined 3.8% from 681.3K to 655.6K shares. The timing is noteworthy: the 30-day and 90-day changes in IBKR's stock price are +15.4% and +32.9% respectively, meaning the sales occurred during an extended uptrend. His cross-ticker track record shows a 100.00% well-timed rate across 20 prior sells (average 90d return -70.6%), though none of his 5 prior IBKR trades have measurable post-sale outcomes yet. The company's fundamentals show strong performance: Revenue of $1,480,000,000.00 (latest quarter), net income of $1,006,000,000.00, annual revenue growth of +19.5%, and a notably low P/E of 0.76. The sale size and proximity to the 52-week high warrant monitoring of whether this signals a change in conviction.

Vice Chairman Nemser sells 25,682 shares at blended avg $63.72; holds 681,268 post-sale as stock near 52-week high ($65.91, -0.5% from $66.22).

Nemser Earl H, Vice Chairman of Interactive Brokers, executed 4 separate sales on 2025-08-06 and 2025-08-07 totaling 25,682 shares for $1,636,390.62 at a blended average price of $63.72. The sale reduced his position by 3.6% to 681,268 shares. The transaction occurred while IBKR stock trades at $65.91, only 0.5% below its 52-week high of $66.22, and has appreciated 14.0% over 30 days and 42.0% over 90 days. Nemser's cross-ticker track record shows a 100% well-timed sell rate across prior transactions, though that history is not specific to IBKR. His 5 most recent trades at IBKR all occurred within the same window (2025-08-04 through 2025-08-08) and lack measurable outcomes. The fundamental backdrop shows strong profitability (net income $1,006,000,000 on revenue $1,480,000,000) and revenue growth of 19.5%, though the P/E of 0.74 suggests an unusual valuation metric. The concentrated selling activity at near-peak prices warrants observation of subsequent price action and any patterns in the timing of executive transactions.

Vice Chairman Earl H Nemser sells 25,682 shares ($1.6M) at $64.17 avg; holds 706,950 shares post-sale.

Earl H Nemser, Vice Chairman at Interactive Brokers Group, executed 3 separate sales totaling 25,682 shares for $1,648,119.38 over two trading days (August 4–5, 2025) at prices ranging from $63.64 to $64.84. The sales reduced his holdings by 3.5% to 706,950 shares, leaving him with substantial ongoing ownership. The stock currently trades at $63.82, near the transaction prices and just 3.6% below its 52-week high of $66.22, while the company demonstrates strong fundamentals with $1.5B in latest-quarter revenue, $1.0B net income, and 19.5% annual revenue growth. Across Nemser's cross-ticker transaction history, his 20 prior sells have carried a 100.00% well-timed rate at the 90-day mark, though his 5 most recent trades at this specific ticker (all within days of the current filing) are too recent to measure outcomes.

Vice Chairman Nemser sold 27,482 shares in 6 transactions for $1,793,964.92; holds 732,632 shares post-sale

Nemser Earl H, Vice Chairman of Interactive Brokers Group, Inc., executed 6 separate sales totaling 27,482 shares (27.5K shares) for $1,793,964.92 ($1.8M) across July 31 and August 1, 2025, at prices ranging from $62.79 to $66.71, with a blended average price of $65.28. This represents a -3.6% reduction in his holdings, leaving him with 732,632 shares (732.6K shares) post-transaction. His cross-ticker track record shows 18 prior sells with a 90-day well-timed rate of 100.00% and an average 90-day return of -70.1%, indicating his historical sell timing has been consistently well-timed. At the same ticker (IBKR), his 2 prior measurable sales in February 2024 also generated negative 90-day returns (-70.8% and -69.8%), extending the pattern of prescient exits. The current stock price of $64.90 sits -2.0% from the 52-week high and +11.9% above the 30-day average, suggesting Nemser sold into recent strength. This sale merits scrutiny given his demonstrated track record of selling before declines, though his position retention of 732.6K shares indicates continued substantial exposure to the company.

Vice Chairman Nemser sells 39,786 shares (39.8K) at $66.38 blended for $2,640,975.52; stock now at $63.61, well off 52-week high of $66.22.

Nemser sold 2 separate transactions totaling 39,786 shares (39.8K shares) for $2,640,975.52 ($2.6M), reducing holdings by 9.9% to 360,114 shares. The sales occurred at prices near the 52-week high ($66.22), with the blended average price of $66.38 only 1.6% above current price of $63.61, even as the stock has gained 9.3% over the past 30 days and 40.2% over 90 days. Nemser's cross-ticker track record shows 20 prior sells with a well-timed rate of 100.00% (all subsequent declines), and these particular sales at near-peak valuations align with that pattern. However, no prior IBKR-specific trades yet have measurable outcomes, making it premature to assess whether this ticker-specific activity follows the same timing success.