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Equibles

BSX

Boston Scientific Corp

Company with tickers: BSX

CIK
885725
CUSIP
101137107
Shares Outstanding
1,486,355,179
13F Activity (30d)
878 filings 853 filers

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 1,663
Total Value: $86,015,792,096
Total Shares: 1,370,769,610
Showing 1–100 of 1,747 holdings by value · page 1 of 18

Institutional Ownership Trend

25 quarters

Holder Concentration

Across 1,663 13F filers · Δ vs Dec 31, 2025
Top Holder
9.6%
Jun 2023 → Mar 2026 · range 9.6% – 10.7%
−0.5 pts
Top 5
29.5%
Jun 2023 → Mar 2026 · range 29.5% – 38.5%
−4.7 pts
Top 10
39.9%
Jun 2023 → Mar 2026 · range 39.9% – 50.1%
−3.8 pts
HHI
257
Jun 2023 → Mar 2026 · range 257 – 389
Broadly held −66

Quarterly Activity

vs Dec 31, 2025
New
198
Increased
674
Decreased
625
Sold Out
314
Unchanged
166
Holder count: -116
Institutional value: -34.7%
Shares held: -0.7%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds Open
Mega D. E. Shaw & Co., Inc. +13,183,148 24,432,352
Mega WELLINGTON MANAGEMENT GROUP LLP +9,124,317 18,833,406
Mega FRANKLIN RESOURCES INC +9,030,920 14,707,002
Mega JPMORGAN CHASE & CO +7,977,271 33,350,157
Mega TWO SIGMA INVESTMENTS, LP +6,941,087 9,416,231

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds Open
Mega FMR LLC −23,160,546 74,226,395
Mega Capital World Investors −11,841,837 15,309,738
Mega Fisher Asset Management, LLC −8,687,613 450,603
Mega MILLENNIUM MANAGEMENT LLC −7,250,486 5,336,204
Mega JENNISON ASSOCIATES LLC −4,570,520 897,775

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD) Open
Mega VANGUARD CAPITAL MANAGEMENT LLC 96,411,568 $6,049,825,892
Mega VANGUARD PORTFOLIO MANAGEMENT LLC 29,796,211 $1,869,712,240
Mega VANGUARD FIDUCIARY TRUST CO 8,382,185 $525,982,108
Mega Vanguard Global Advisers, LLC 3,244,238 $203,575,934
Mega VANGUARD ASSET MANAGEMENT, Ltd 2,567,095 $161,085,211

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD) Open
Mega VANGUARD GROUP INC 139,685,997 $13,319,059,811
Mega NORGES BANK 23,066,546 $2,199,395,161
Large TWO SIGMA ADVISERS, LP 6,298,460 $600,558,161
Mid Egerton Capital (UK) LLP 5,385,084 $513,467,759
Mid SurgoCap Partners LP 2,559,210 $244,020,673
Filter: New 198 Increased 674 Reduced 625 Sold out 314 Unchanged 166
Showing 100 of 1,747
All Common Calls Puts
Export CSV
Holder Value (USD) % of 13F Shares Open
Mega BlackRock, Inc. $8,271,832,814 9.62% 131,822,037
Mega VANGUARD CAPITAL MANAGEMENT LLC $6,049,825,892 7.03% 96,411,568
Mega FMR LLC $4,657,706,283 5.41% 74,226,395
Mega STATE STREET CORP $4,266,174,649 4.96% 67,986,847
Mega JPMORGAN CHASE & CO $2,092,722,344 2.43% 33,350,157
Mega GEODE CAPITAL MANAGEMENT, LLC $2,088,681,251 2.43% 33,285,757
Mega PRIMECAP MANAGEMENT CO/CA/ $2,041,243,318 2.37% 32,529,774
Mega VANGUARD PORTFOLIO MANAGEMENT LLC $1,869,712,240 2.17% 29,796,211
Mega D. E. Shaw & Co., Inc. $1,525,600,087 1.77% 24,312,352
Mega BANK OF AMERICA CORP /DE/ Bank $1,427,979,535 1.66% 22,756,646
Mega MORGAN STANLEY $1,397,233,160 1.62% 22,266,664
Mega GOLDMAN SACHS GROUP INC $1,185,449,403 1.38% 18,891,624
Mega WELLINGTON MANAGEMENT GROUP LLP $1,181,796,224 1.37% 18,833,406
Mid Bollard Group LLC $1,162,893,855 1.35% 18,532,173
Mega JANUS HENDERSON GROUP PLC $1,035,209,713 1.20% 16,497,366
Mega Capital World Investors $960,686,059 1.12% 15,309,738
Mega UBS Group AG $930,247,536 1.08% 14,824,662
Mega FRANKLIN RESOURCES INC $909,795,995 1.06% 14,498,741
Mega Amundi $886,212,788 1.03% 14,122,913
Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP $871,702,167 1.01% 13,891,668
Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC $847,989,125 0.99% 13,513,771
Mega NORTHERN TRUST CORP Bank $839,211,030 0.98% 13,373,881
Mega DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main Bank $830,160,158 0.97% 13,229,644
Mega Nuveen, LLC $736,328,203 0.86% 11,734,314
Mega MASSACHUSETTS FINANCIAL SERVICES CO /MA/ $690,034,889 0.80% 10,996,572
Mega Legal & General Group Plc $665,198,065 0.77% 10,600,766
Large Assenagon Asset Management S.A. $631,135,484 0.73% 10,057,936
Mega Bank of New York Mellon Corp Bank $598,878,148 0.70% 9,543,875
Mega TWO SIGMA INVESTMENTS, LP $590,554,745 0.69% 9,411,231
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $575,428,795 0.67% 9,170,180
Mega Invesco Ltd. $568,009,290 0.66% 9,051,941
Mega VANGUARD FIDUCIARY TRUST CO Bank $525,982,108 0.61% 8,382,185
Mega CANADA PENSION PLAN INVESTMENT BOARD Pension $504,255,674 0.59% 8,035,947
Large PARNASSUS INVESTMENTS, LLC $502,239,705 0.58% 8,003,820
Large Vontobel Holding Ltd. $500,632,925 0.58% 7,978,214
Mega PRICE T ROWE ASSOCIATES INC /MD/ $494,053,841 0.57% 7,873,368
Large EDGEWOOD MANAGEMENT LLC $478,744,787 0.56% 7,629,399
Large FARALLON CAPITAL MANAGEMENT LLC $468,785,421 0.54% 7,470,684
Large Ninety One UK Ltd $458,610,885 0.53% 7,308,540
Large 1832 Asset Management L.P. $455,109,811 0.53% 7,252,746
Mega SCHRODER INVESTMENT MANAGEMENT GROUP $455,063,437 0.53% 7,252,007
Mega Capital Research Global Investors $444,325,659 0.52% 7,080,887
Mega NEUBERGER BERMAN GROUP LLC $443,824,098 0.52% 7,072,894
Large BNP PARIBAS ASSET MANAGEMENT Holding S.A. $437,130,867 0.51% 6,966,229
Mega DEUTSCHE BANK AG\ Bank $417,493,000 0.49% 6,653,275
Mega ROYAL BANK OF CANADA Bank $393,647,249 0.46% 6,273,263
Mega DIMENSIONAL FUND ADVISORS LP $382,635,505 0.44% 6,097,777
Mega AMERIPRISE FINANCIAL INC $349,733,293 0.41% 5,573,439
Large Qube Research & Technologies Ltd $349,509,970 0.41% 5,569,880
Mega AQR CAPITAL MANAGEMENT LLC $328,799,705 0.38% 5,239,836
Large Pictet Asset Management Holding SA $321,283,576 0.37% 5,120,057
Mega BNP PARIBAS ARBITRAGE, SA $320,138,326 0.37% 5,101,806
Mega BARCLAYS PLC $315,265,849 0.37% 5,024,157
Large FIRST MANHATTAN CO. LLC. $308,178,866 0.36% 4,911,217
Large LAZARD ASSET MANAGEMENT LLC $306,251,625 0.36% 4,880,504
Large ADAGE CAPITAL PARTNERS GP, L.L.C. $290,735,621 0.34% 4,633,237
Large Ensign Peak Advisors, Inc $282,829,435 0.33% 4,507,242
Mega Swiss National Bank Bank $273,000,150 0.32% 4,350,600
Mega MILLENNIUM MANAGEMENT LLC $272,197,201 0.32% 4,337,804
Mega CITADEL ADVISORS LLC $264,636,453 0.31% 4,217,314
Mid MAVERICK CAPITAL LTD $263,241,834 0.31% 4,195,089
Mega JANE STREET GROUP, LLC $253,015,341 0.29% 4,032,117
Large Man Group plc $233,350,370 0.27% 3,718,731
Mega National Pension Service Pension $232,096,248 0.27% 3,698,745
Large Point72 Asset Management, L.P. $231,379,016 0.27% 3,687,315
Large MARSHALL WACE, LLP $226,591,504 0.26% 3,611,020
Large Holocene Advisors, LP $215,153,184 0.25% 3,428,736
Mega Sumitomo Mitsui Trust Group, Inc. $214,781,515 0.25% 3,422,813
Mega HSBC HOLDINGS PLC $213,331,360 0.25% 3,399,703
Mega Mitsubishi UFJ Asset Management Co., Ltd. $211,097,777 0.25% 3,364,108
Mega Vanguard Global Advisers, LLC $203,575,934 0.24% 3,244,238
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $203,002,525 0.24% 3,235,100
Mega FIL Ltd $201,685,778 0.23% 3,214,116
Large Rathbones Group PLC $199,509,546 0.23% 3,179,435
Large RENAISSANCE TECHNOLOGIES LLC $197,788,313 0.23% 3,152,005
Mega RAYMOND JAMES FINANCIAL INC $190,075,835 0.22% 3,029,097
Mega WELLS FARGO & COMPANY/MN $186,450,453 0.22% 2,971,322
Large Alecta Tjanstepension Omsesidigt Pension $179,835,225 0.21% 2,865,900
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $177,519,750 0.21% 2,829,000
Large Unisphere Establishment $175,869,425 0.20% 2,802,700
Large Aberdeen Group plc $173,584,068 0.20% 2,766,280
Mega RHUMBLINE ADVISERS $167,833,722 0.20% 2,674,641
Mega MANUFACTURERS LIFE INSURANCE COMPANY, THE Insurance $165,008,215 0.19% 2,629,613
Mega AMERICAN CENTURY COMPANIES INC $164,267,138 0.19% 2,617,803
Large Handelsbanken Fonder AB $162,338,077 0.19% 2,587,061
Mega VANGUARD ASSET MANAGEMENT, Ltd $161,085,211 0.19% 2,567,095
Large Mariner, LLC $155,931,239 0.18% 2,484,960
Large KBC Group NV $151,886,750 0.18% 2,420,506
Large Temasek Holdings (Private) Ltd $150,563,981 0.18% 2,399,426
Large Allianz Asset Management GmbH $150,212,455 0.17% 2,393,824
Mid ORBIMED ADVISORS LLC $149,476,775 0.17% 2,382,100
Large Russell Investments Group, Ltd. $145,480,849 0.17% 2,318,420
Large BANK OF NOVA SCOTIA Bank $144,513,939 0.17% 2,303,011
Large CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Pension $144,322,113 0.17% 2,299,954
Mega Clearbridge Investments, LLC $143,033,479 0.17% 2,279,418
Large WORLDQUANT MILLENNIUM ADVISORS LLC $142,702,285 0.17% 2,274,140
Mega California Public Employees Retirement System Pension $141,894,378 0.16% 2,261,265
Mid Ilex Capital Partners (UK) LLP $140,194,795 0.16% 2,234,180
Mid MILFORD FUNDS LTD $138,691,367 0.16% 2,210,221
Mid Mirova US LLC $138,263,412 0.16% 2,203,401

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