Form 13-F position report

BOSTON SCIENTIFIC CORP

Reported by ANCHOR CAPITAL ADVISORS LLC

BSX CUSIP 101137107 Manager CIK 0000813933

Reported 1,167,719 shares, down 107,410 (8.4%) from the prior quarter.

Reported value -10.6%; share count -8.4% vs. the prior quarter.

Reduced
% of reported 13F value 1.72% This manager · Q3 2023
Shares 1,167,719 Quarter-end amount reported
Reported value $61,655,569 Fair value at quarter end
Consecutive quarters held 42 Through Q3 2023

Reported position value by quarter

Reported position value by quarter

Each bar is a Form 13-F quarter-end snapshot. It does not show trades made within the quarter.

Reported position value by quarter
Date Holding Value
2021-12-31 67023000
2022-03-31 69601000
2022-06-30 56127000
2022-09-30 56741000
2022-12-31 64885515
2023-03-31 67390906
2023-06-30 68971734
2023-09-30 61655569
2023-12-31 64237611
2024-03-31 70257441
2024-06-30 68569856
2024-09-30 63671572
2024-12-31 64929223
2025-03-31 50072900
2025-06-30 51686343
2025-09-30 45223596
2025-12-31 43793979
2026-03-31 29096923
2026-06-30 7682470
2026-09-30 7725303

Quarterly position history

How this manager's reported quarter-end position changed over time.

20 quarters
Quarterly reported position history for BOSTON SCIENTIFIC CORP held by ANCHOR CAPITAL ADVISORS LLC.
Quarter Activity Shares Change % of reported 13F Reported value Filed Source filing
Q3 2026 Reduced 176,983 -3,019 (-1.7%) 0.24% $7,725,303 2026-11-05
Q2 2026 Reduced 180,002 -283,694 (-61.2%) 0.22% $7,682,470 2026-08-05
Q1 2026 Added 463,696 +4,399 (1.0%) 0.83% $29,096,923 2026-05-12
Q4 2025 Reduced 459,297 -3,917 (-0.8%) 1.27% $43,793,979 2026-02-10
Q3 2025 Reduced 463,214 -17,992 (-3.7%) 1.31% $45,223,596 2025-10-30
Q2 2025 Reduced 481,206 -15,155 (-3.1%) 1.52% $51,686,343 2025-08-06
Q1 2025 Reduced 496,361 -230,567 (-31.7%) 1.49% $50,072,900 2025-05-13
Q4 2024 Reduced 726,928 -32,876 (-4.3%) 1.85% $64,929,223 2025-02-05
Q3 2024 Reduced 759,804 -130,598 (-14.7%) 1.69% $63,671,572 2024-10-31
Q2 2024 Reduced 890,402 -135,404 (-13.2%) 1.93% $68,569,856 2024-08-06
Q1 2024 Reduced 1,025,806 -85,379 (-7.7%) 1.84% $70,257,441 2024-05-07
Q4 2023 Reduced 1,111,185 -56,534 (-4.8%) 1.7% $64,237,611 2024-02-05
Q3 2023 Reduced 1,167,719 -107,410 (-8.4%) 1.72% $61,655,569 2023-11-09
Q2 2023 Reduced 1,275,129 -71,881 (-5.3%) 1.79% $68,971,734 2023-08-04
Q1 2023 Reduced 1,347,010 -55,314 (-3.9%) 1.78% $67,390,906 2023-05-03
Q4 2022 Reduced 1,402,324 -62,726 (-4.3%) 1.67% $64,885,515 2023-02-10
Q3 2022 Reduced 1,465,050 -40,908 (-2.7%) 1.56% $56,741,000 2022-11-09
Q2 2022 Reduced 1,505,958 -65,532 (-4.2%) 1.42% $56,127,000 2022-08-04
Q1 2022 Reduced 1,571,490 -6,261 (-0.4%) 1.47% $69,601,000 2022-05-06
Q4 2021 Reduced 1,577,751 -3,820 (-0.2%) 1.33% $67,023,000 2022-02-10
Five years are shown. A free account unlocks the complete reported history. Unlock full history

Who else reported the position

1152 managers reported BOSTON SCIENTIFIC CORP for Q3 2023.

Managers reporting BOSTON SCIENTIFIC CORP in Q3 2023.
Manager Activity Shares Change % of reported 13F Reported value Tenure
BlackRock Inc Reduced 129,307,129 -8,186,920 0.2% $6,827,416,434 42 qtrs
FMR LLC Added 125,920,357 +8,045,263 0.57% $6,648,594,826 42 qtrs
VANGUARD GROUP INC Added 123,768,348 +1,525,432 0.16% $6,534,968,775 42 qtrs
MASSACHUSETTS FINANCIAL SERVICES CO MA Reduced 62,533,382 -6,603,703 1.16% $3,301,762,569 21 qtrs
STATE STREET CORPORATION Reduced 61,945,856 -1,246,041 0.18% $3,270,741,197 42 qtrs
WELLINGTON MANAGEMENT GROUP LLP Added 42,076,529 +2,336,348 0.44% $2,221,640,732 42 qtrs
PRIMECAP MANAGEMENT CO CA Reduced 37,355,169 -73,810 1.66% $1,972,352,923 42 qtrs
GEODE CAPITAL MANAGEMENT LLC Added 26,996,317 +948,203 0.17% $1,421,885,504 42 qtrs
Bank of America Corporation Reduced 25,291,179 -1,295,000 0.15% $1,335,374,225 42 qtrs
JPMorgan Chase & Co Added 24,103,972 +940,531 0.14% $1,272,689,730 42 qtrs
Premium adds each manager's conviction percentile across reporting peers.
Filing details and methodology As reported
Report period
September 30, 2023
Filed
November 09, 2023
Filing type
13F-HR
Position type
COM

Voting authority reported

Sole
1,129,310
Shared
0
None
38,409

“None” means the manager reported no voting authority for those shares on non-routine matters. It does not disclose why and is not evidence of securities lending.

Form 13-F is a delayed quarter-end snapshot of disclosed long Section 13(f) securities. It can be filed up to 45 days after quarter end, excludes short positions and most non-U.S. securities, and does not reveal intra-quarter trading. For options, reported shares and value describe the underlying-share exposure; strike, expiry, premium, and written positions are not disclosed.