Holocene Advisors
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Holocene Advisors’s Boston Scientific BSX Stock Holding History

Holocene Advisors’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 		$34.4M Sell
806,732
-2,622,004
-76% -$142M 0.08% 232
2026
Q1 		$215M Sell
3,428,736
-1,042,353
-23% -$83.4M 0.52% 50
2025
Q4 		$426M Buy
4,471,089
+1,520,224
+52% +$149M 0.9% 18
2025
Q3 		$288M Sell
2,950,865
-1,230,169
-29% -$127M 0.66% 41
2025
Q2 		$449M Buy
4,181,034
+2,295,282
+122% +$232M 1.1% 13
2025
Q1 		$190M Sell
1,885,752
-1,171,948
-38% -$118M 0.56% 52
2024
Q4 		$273M Sell
3,057,700
-939,932
-24% -$82.7M 0.87% 19
2024
Q3 		$335M Sell
3,997,632
-42,798
-1% -$3.37M 1.35% 6
2024
Q2 		$311M Sell
4,040,430
-1,747,569
-30% -$128M 1.3% 9
2024
Q1 		$396M Sell
5,787,999
-2,097,160
-27% -$135M 1.46% 3
2023
Q4 		$456M Buy
7,885,159
+908,423
+13% +$48.5M 1.78% 3
2023
Q3 		$368M Buy
6,976,736
+904,969
+15% +$47.5M 1.61% 1
2023
Q2 		$328M Buy
6,071,767
+1,717,569
+39% +$89.7M 1.4% 6
2023
Q1 		$218M Buy
+4,354,198
New +$205M 1.07% 13
2022
Q4 		– Sell
-3,398,887
Closed -$132M – 698
2022
Q3 		$132M Sell
3,398,887
-182,781
-5% -$7.33M 0.84% 28
2022
Q2 		$133M Sell
3,581,668
-318,482
-8% -$13M 0.81% 35
2022
Q1 		$173M Buy
3,900,150
+619,103
+19% +$26.8M 0.9% 24
2021
Q4 		$139M Buy
3,281,047
+560,862
+21% +$23.6M 0.73% 39
2021
Q3 		$118M Buy
2,720,185
+77,740
+3% +$3.44M 0.64% 41
2021
Q2 		$113M Sell
2,642,445
-2,329,494
-47% -$98M 0.64% 41
2021
Q1 		$192M Buy
4,971,939
+4,454,432
+861% +$169M 1.21% 9
2020
Q4 		$18.6M Sell
517,507
-1,650,239
-76% -$59.5M 0.12% 209
2020
Q3 		$82.8M Buy
+2,167,746
New +$83.5M 0.63% 45
2019
Q4 		– Sell
-623,762
Closed -$25.4M – 679
2019
Q3 		$25.4M Sell
623,762
-133,079
-18% -$5.64M 0.26% 99
2019
Q2 		$32.5M Buy
+756,841
New +$29.1M 0.41% 83
2018
Q2 		– Sell
-20,986
Closed -$573K – 587
2018
Q1 		$573K Buy
20,986
+999
+5% +$27.2K 0.01% 184
2017
Q4 		$495K Buy
+19,987
New +$551K 0.01% 415

Other funds holding BSX

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $169B AUM 114.72% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Massachusetts Financial Services
Massachusetts Financial Services Boston, Massachusetts $315B AUM 27.84% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
D.E. Shaw & Co
D.E. Shaw & Co New York $210B AUM 57.28% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return

Holocene Advisors's BSX Position: Q2 2026 in Review

Holocene Advisors reduced its Boston Scientific (BSX) stake by 76% in Q2 2026, selling an estimated $142M and leaving 806,732 shares worth $34.4M. The position accounts for 0.08% of the portfolio, ranked #232.

Holocene Advisors first reported a position in BSX in Q4 2017 and has held it in 27 quarters since. The position peaked at $456M in Q4 2023. 1,477 funds tracked by Wall St. Rank hold BSX as of Q2 2026.

  • Holocene Advisors held 806,732 shares of Boston Scientific worth $34.4M as of Q2 2026.
  • Holocene Advisors sold 2,622,004 Boston Scientific shares in Q2 2026, an estimated $142M.
  • Boston Scientific made up 0.08% of Holocene Advisors's portfolio in Q2 2026, its #232 holding.
  • Holocene Advisors first reported a position in Boston Scientific in Q4 2017 and has held it in 27 quarters since.
  • Holocene Advisors's Boston Scientific position peaked at $456M in Q4 2023.
  • 1,477 funds tracked by Wall St. Rank held Boston Scientific as of Q2 2026.

Based on Holocene Advisors's 13F filing for Q2 2026, filed 14 Aug 2026.