S&CO Inc’s Interactive Brokers IBKR Stock Holding History

S&CO Inc’s Portfolio IBKR Stock Details IBKR Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$4.23M	Hold	63,080	–	–	0.26%	79
2025 Q4	$4.06M	Buy	63,080 +160	+0.3%	+$10.7K	0.25%	82
2025 Q3	$4.33M	Sell	62,920 -2,000	-3%	-$126K	0.27%	80
2025 Q2	$3.6M	Buy	64,920 +2,800	+5%	+$133K	0.23%	85
2025 Q1	$2.57M	Sell	62,120 -1,380	-2%	-$68.4K	0.17%	103
2024 Q4	$2.8M	Buy	63,500 +2,000	+3%	+$84.2K	0.19%	97
2024 Q3	$2.14M	Hold	61,500	–	–	0.14%	110
2024 Q2	$1.88M	Buy	61,500 +5,500	+10%	+$164K	0.13%	115
2024 Q1	$1.56M	Buy	+56,000	New	+$1.39M	0.11%	123

Other funds holding IBKR

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

CCM

Cantillon Capital Management New York $15.1B AUM 23.54% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Kayne Anderson Rudnick Investment Management Los Angeles, California $34B AUM 6.31% 1-Year Est. Return

GWM

Greenwich Wealth Management Greenwich, Connecticut $2.45B AUM 39.53% 1-Year Est. Return

Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return

S&CO Inc's IBKR Position: Q1 2026 in Review

S&CO Inc held its Interactive Brokers (IBKR) position steady in Q1 2026 at 63,080 shares worth $4.23M. The position accounts for 0.26% of the portfolio, ranked #79.

S&CO Inc first reported a position in IBKR in Q1 2024 and has held it in 9 quarters since. The position peaked at $4.33M in Q3 2025. 993 funds tracked by Wall St. Rank hold IBKR as of Q1 2026.

S&CO Inc held 63,080 shares of Interactive Brokers worth $4.23M as of Q1 2026.
S&CO Inc left its Interactive Brokers share count unchanged in Q1 2026.
Interactive Brokers made up 0.26% of S&CO Inc's portfolio in Q1 2026, its #79 holding.
S&CO Inc first reported a position in Interactive Brokers in Q1 2024 and has held it in 9 quarters since.
S&CO Inc's Interactive Brokers position peaked at $4.33M in Q3 2025.
993 funds tracked by Wall St. Rank held Interactive Brokers as of Q1 2026.

Based on S&CO Inc's 13F filing for Q1 2026, filed 7 May 2026.