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Calamos Wealth Management’s Boston Scientific BSX Stock Holding History

Calamos Wealth 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 		$1.09M Sell
17,364
-99,850
-85% -$7.99M 0.04% 190
2025
Q4 		$11.2M Sell
117,214
-37,824
-24% -$3.71M 0.39% 61
2025
Q3 		$15.1M Buy
155,038
+53,252
+52% +$5.51M 0.55% 41
2025
Q2 		$10.9M Buy
101,786
+2,864
+3% +$290K 0.46% 57
2025
Q1 		$9.98M Sell
98,922
-56,510
-36% -$5.69M 0.5% 54
2024
Q4 		$13.9M Buy
155,432
+872
+0.6% +$76.8K 0.69% 30
2024
Q3 		$13M Buy
154,560
+24,002
+18% +$1.89M 0.66% 36
2024
Q2 		$10.1M Sell
130,558
-22,838
-15% -$1.67M 0.54% 46
2024
Q1 		$10.5M Buy
153,396
+1,134
+0.7% +$72.9K 0.59% 44
2023
Q4 		$8.8M Buy
152,262
+1,376
+0.9% +$73.4K 0.55% 52
2023
Q3 		$7.97M Buy
150,886
+1,511
+1% +$79.2K 0.6% 45
2023
Q2 		$8.08M Buy
149,375
+2,331
+2% +$122K 0.59% 41
2023
Q1 		$7.36M Sell
147,044
-5,361
-4% -$253K 0.58% 48
2022
Q4 		$7.05M Sell
152,405
-651
-0.4% -$28.2K 0.55% 52
2022
Q3 		$5.93M Buy
153,056
+5,138
+3% +$206K 0.51% 53
2022
Q2 		$5.51M Buy
147,918
+2,919
+2% +$119K 0.49% 57
2022
Q1 		$6.42M Buy
144,999
+4,530
+3% +$196K 0.48% 53
2021
Q4 		$5.97M Buy
140,469
+5,187
+4% +$218K 0.44% 60
2021
Q3 		$5.87M Buy
135,282
+1,681
+1% +$74.4K 0.47% 57
2021
Q2 		$5.71M Sell
133,601
-10,400
-7% -$438K 0.44% 57
2021
Q1 		$5.57M Sell
144,001
-24,659
-15% -$933K 0.46% 65
2020
Q4 		$6.06M Buy
168,660
+1,701
+1% +$61.3K 0.55% 53
2020
Q3 		$6.38M Buy
166,959
+33,085
+25% +$1.27M 0.73% 34
2020
Q2 		$4.7M Buy
133,874
+14,034
+12% +$505K 0.59% 46
2020
Q1 		$3.91M Buy
+119,840
New +$4.68M 0.6% 48

Other funds holding BSX

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Primecap Management
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
D.E. Shaw & Co New York $166B AUM 43.98% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return

Calamos Wealth Management's BSX Position: Q1 2026 in Review

Calamos Wealth Management reduced its Boston Scientific (BSX) stake by 85% in Q1 2026, selling an estimated $7.99M and leaving 17,364 shares worth $1.09M. The position accounts for 0.04% of the portfolio, ranked #190.

Calamos Wealth Management first reported a position in BSX in Q1 2020 and has held it in 25 quarters since. The position peaked at $15.1M in Q3 2025. 1,666 funds tracked by Wall St. Rank hold BSX as of Q1 2026.

  • Calamos Wealth Management held 17,364 shares of Boston Scientific worth $1.09M as of Q1 2026.
  • Calamos Wealth Management sold 99,850 Boston Scientific shares in Q1 2026, an estimated $7.99M.
  • Boston Scientific made up 0.04% of Calamos Wealth Management's portfolio in Q1 2026, its #190 holding.
  • Calamos Wealth Management first reported a position in Boston Scientific in Q1 2020 and has held it in 25 quarters since.
  • Calamos Wealth Management's Boston Scientific position peaked at $15.1M in Q3 2025.
  • 1,666 funds tracked by Wall St. Rank held Boston Scientific as of Q1 2026.

Based on Calamos Wealth Management's 13F filing for Q1 2026, filed 4 May 2026.