John Overdeck’s Boston Scientific BSX Stock Holding History

John Overdeck’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 Q2	$1.29M	Buy	+30,300	New	+$1.65M	﹤0.01%	3406
2026 Q1	–	Sell	-3,800	Closed	-$362K	–	4603
2025 Q4	$362K	Sell	3,800 -2,200	-37%	-$216K	﹤0.01%	3493
2025 Q3	$586K	Buy	+6,000	New	+$621K	﹤0.01%	2910
2021 Q4	–	Sell	-5,000	Closed	-$217K	–	4310
2021 Q3	$217K	Buy	+5,000	New	+$221K	﹤0.01%	3909
2020 Q4	–	Sell	-9,600	Closed	-$367K	–	3350
2020 Q3	$367K	Buy	+9,600	New	+$370K	﹤0.01%	2455
2020 Q1	–	Sell	-7,300	Closed	-$330K	–	3137
2019 Q4	$330K	Sell	7,300 -12,800	-64%	-$536K	﹤0.01%	3115
2019 Q3	$818K	Sell	20,100 -1,700	-8%	-$72K	﹤0.01%	2153
2019 Q2	$937K	Buy	+21,800	New	+$839K	﹤0.01%	1980
2018 Q2	–	Sell	-18,000	Closed	-$492K	–	3324
2018 Q1	$492K	Buy	+18,000	New	+$489K	﹤0.01%	2476
2017 Q1	–	Sell	-86,400	Closed	-$1.87M	–	2915
2016 Q4	$1.87M	Buy	86,400 +60,500	+234%	+$1.32M	0.01%	1541
2016 Q3	$616K	Buy	+25,900	New	+$618K	﹤0.01%	2310
2016 Q1	–	Sell	-56,000	Closed	-$1.03M	–	2803
2015 Q4	$1.03M	Buy	+56,000	New	+$1M	0.01%	1478

Other funds holding BSX

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Primecap Management Pasadena, California $169B AUM 114.72% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

Massachusetts Financial Services Boston, Massachusetts $315B AUM 27.84% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

D.E. Shaw & Co New York $210B AUM 57.28% 1-Year Est. Return

JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return

John Overdeck's BSX Position: Q2 2026 in Review

John Overdeck increased its Boston Scientific (BSX) stake by 106% in Q2 2026, buying an estimated $540M and bringing the position to 19,359,023 shares worth $826M. The position accounts for 0.6% of the portfolio, ranked #13.

John Overdeck first reported a position in BSX in Q2 2013 and has held it in 45 quarters since. 1,468 funds tracked by Wall St. Rank hold BSX as of Q2 2026.

John Overdeck held 19,359,023 shares of Boston Scientific worth $826M as of Q2 2026.
John Overdeck bought 9,947,792 Boston Scientific shares in Q2 2026, an estimated $540M.
Boston Scientific made up 0.6% of John Overdeck's portfolio in Q2 2026, its #13 holding.
John Overdeck first reported a position in Boston Scientific in Q2 2013 and has held it in 45 quarters since.
1,468 funds tracked by Wall St. Rank held Boston Scientific as of Q2 2026.

Based on Two Sigma Investments's 13F filing for Q2 2026, filed 14 Aug 2026.