Dark Forest Capital Management’s Boston Scientific BSX Stock Holding History

Dark Forest Capital Management’s Portfolio BSX Stock Details BSX Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$1.8M	Sell	28,632 -12,931	-31%	-$1.03M	0.16%	179
2025 Q4	$3.96M	Sell	41,563 -22,746	-35%	-$2.23M	0.18%	150
2025 Q3	$6.28M	Buy	64,309 +14,760	+30%	+$1.53M	0.24%	76
2025 Q2	$5.32M	Sell	49,549 -14,783	-23%	-$1.5M	0.21%	94
2025 Q1	$6.49M	Buy	64,332 +46,232	+255%	+$4.66M	0.29%	34
2024 Q4	$1.62M	Buy	18,100 +1,797	+11%	+$158K	0.24%	65
2024 Q3	$1.37M	Buy	16,303 +11,173	+218%	+$881K	0.17%	123
2024 Q2	$395K	Buy	5,130 +1,924	+60%	+$141K	0.07%	347
2024 Q1	$220K	Buy	+3,206	New	+$206K	0.04%	588
2023 Q3	–	Sell	-12,903	Closed	-$698K	–	1095
2023 Q2	$698K	Buy	+12,903	New	+$674K	0.06%	478
2022 Q4	–	Sell	-6,418	Closed	-$249K	–	1173
2022 Q3	$249K	Buy	6,418 +6,262	+4,014%	+$251K	0.04%	355
2022 Q2	$6K	Buy	+156	New	+$6.35K	﹤0.01%	601
2022 Q1	–	Sell	-273	Closed	-$12K	–	1308
2021 Q4	$12K	Sell	273 -1,099	-80%	-$46.2K	﹤0.01%	853
2021 Q3	$60K	Sell	1,372 -9,104	-87%	-$403K	0.02%	522
2021 Q2	$448K	Buy	+10,476	New	+$441K	0.19%	44

Other funds holding BSX

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

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

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

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

JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return

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

Primecap Management Pasadena, California $127B AUM 44.11% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

D.E. Shaw & Co New York $166B AUM 43.98% 1-Year Est. Return

Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return

Dark Forest Capital Management's BSX Position: Q1 2026 in Review

Dark Forest Capital Management reduced its Boston Scientific (BSX) stake by 31% in Q1 2026, selling an estimated $1.03M and leaving 28,632 shares worth $1.8M. The position accounts for 0.16% of the portfolio, ranked #179.

Dark Forest Capital Management first reported a position in BSX in Q2 2021 and has held it in 15 quarters since. The position peaked at $6.49M in Q1 2025. 1,664 funds tracked by Wall St. Rank hold BSX as of Q1 2026.

Dark Forest Capital Management held 28,632 shares of Boston Scientific worth $1.8M as of Q1 2026.
Dark Forest Capital Management sold 12,931 Boston Scientific shares in Q1 2026, an estimated $1.03M.
Boston Scientific made up 0.16% of Dark Forest Capital Management's portfolio in Q1 2026, its #179 holding.
Dark Forest Capital Management first reported a position in Boston Scientific in Q2 2021 and has held it in 15 quarters since.
Dark Forest Capital Management's Boston Scientific position peaked at $6.49M in Q1 2025.
1,664 funds tracked by Wall St. Rank held Boston Scientific as of Q1 2026.

Based on Dark Forest Capital Management's 13F filing for Q1 2026, filed 15 May 2026.