Bank of Montreal’s Boston Scientific BSX Stock Holding History

Bank of Montreal’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	–	Sell	-327,500	Closed	-$20.6M	–	3866
2026 Q1	$20.6M	Buy	+327,500	New	+$26.2M	0.01%	831
2025 Q3	–	Sell	-85,000	Closed	-$9.13M	–	3545
2025 Q2	$9.13M	Sell	85,000 -15,000	-15%	-$1.52M	﹤0.01%	1021
2025 Q1	$10.1M	Buy	+100,000	New	+$10.1M	﹤0.01%	923
2022 Q4	–	Sell	-6,700	Closed	-$265K	–	3989
2022 Q3	$265K	Sell	6,700 -73,300	-92%	-$2.94M	﹤0.01%	3016
2022 Q2	$3.04M	Sell	80,000 -20,000	-20%	-$814K	﹤0.01%	1685
2022 Q1	$4.47M	Buy	+100,000	New	+$4.33M	﹤0.01%	1549
2020 Q1	–	Sell	-49,600	Closed	-$2.24M	–	4138
2019 Q4	$2.24M	Buy	+49,600	New	+$2.08M	﹤0.01%	1820

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 $3.38T AUM 44.17% 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

Bank of Montreal's BSX Position: Q2 2026 in Review

Bank of Montreal increased its Boston Scientific (BSX) stake by 3.8% in Q2 2026, buying an estimated $2.71M and bringing the position to 1,374,431 shares worth $58.7M. The position accounts for 0.02% of the portfolio, ranked #556.

Bank of Montreal first reported a position in BSX in Q2 2013 and has held it in 53 quarters since. The position peaked at $409M in Q3 2024. 1,486 funds tracked by Wall St. Rank hold BSX as of Q2 2026.

Bank of Montreal held 1,374,431 shares of Boston Scientific worth $58.7M as of Q2 2026.
Bank of Montreal bought 49,904 Boston Scientific shares in Q2 2026, an estimated $2.71M.
Boston Scientific made up 0.02% of Bank of Montreal's portfolio in Q2 2026, its #556 holding.
Bank of Montreal first reported a position in Boston Scientific in Q2 2013 and has held it in 53 quarters since.
Bank of Montreal's Boston Scientific position peaked at $409M in Q3 2024.
1,486 funds tracked by Wall St. Rank held Boston Scientific as of Q2 2026.

Based on Bank of Montreal's 13F filing for Q2 2026, filed 12 Aug 2026.