HOLOGIC INC (HOLX) Institutional Shareholders
HOLOGIC INC (HOLX) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026. The institutional investors covered on this page collectively reported approximately $15.51B in HOLX holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of HOLX tracked by InsiderSet, reporting ownership valued at approximately $1.70B in its March 31, 2026 SEC Form 13F filing.
The top 10 institutional shareholders tracked on this page collectively account for approximately 49% of the total disclosed HOLX value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Vanguard Capital Management Llc, State Street Corp, and several other long-term asset managers with concentrated positions in HOLOGIC INC (HOLX).
This page ranks the largest institutional HOLX shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
473
Total Reported Value
$15.51B
Largest Holder
Blackrock, Inc.
Largest Position
$1.70B
Insider Transactions (90d)
0
Latest Filing Quarter
Q2 2026
New Institutional Positions
54
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.03% | 22,520,444 | $1,702,320,349 | — | — | — | |
| Vanguard Capital Management Llc | 0.03% | 14,503,914 | $1,096,350,859 | — | — | — | |
| State Street Corp | 0.03% | 9,990,906 | $755,212,585 | — | — | — | |
| Hbk Investments L P | 9.34% | 9,800,000 | $740,782,000 | — | — | — | |
| Vanguard Portfolio Management Llc | 0.04% | 9,620,600 | $727,221,154 | — | — | — | |
| Storebrand Asset Management As | 0.22% | 9,553,648 | $668,166,904 | — | — | — | |
| Fil Ltd | 0.46% | 7,821,581 | $591,233,308 | — | — | — | |
| Geode Capital Management, Llc | 0.03% | 6,058,845 | $456,297,563 | — | — | — | |
| Millennium Management Llc | 0.32% | 5,651,225 | $427,176,098 | — | — | — | |
| Ubs Group Ag | 0.07% | 5,089,745 | $384,733,824 | — | — | — | |
| Balyasny Asset Management L.P. | 0.70% | 4,722,968 | $357,009,151 | — | — | — | |
| Pentwater Capital Management Lp | 2.42% | 4,500,224 | $340,171,932 | — | — | — | |
| Morgan Stanley | 0.02% | 3,573,011 | $270,084,130 | — | — | — | |
| Invesco Ltd. | 0.04% | 3,164,586 | $239,211,055 | — | — | — | |
| Qube Research & Technologies Ltd | 0.34% | 3,131,196 | $236,687,106 | — | — | — | |
| O'Connor Alternative Investments Llc | 20.22% | 3,118,178 | $235,703,075 | — | — | — | |
| Arrowstreet Capital, Limited Partnership | 0.12% | 2,921,130 | $220,808,217 | — | — | — | |
| Northern Trust Corp | 0.03% | 2,676,190 | $202,293,203 | — | — | — | |
| Goldman Sachs Group Inc | 0.02% | 2,322,673 | $175,570,864 | — | — | — | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.04% | 2,299,022 | $173,783,072 | — | — | — | |
| Bank Of America Corp | 0.01% | 2,254,024 | $170,381,693 | — | — | — | |
| Tudor Investment Corp Et Al | 0.89% | 2,196,804 | $166,056,414 | — | — | — | |
| Deutsche Bank Ag\ | 0.05% | 2,173,847 | $164,321,095 | — | — | — | |
| Charles Schwab Investment Management Inc | 0.02% | 2,157,358 | $163,074,691 | — | — | — | |
| Earnest Partners Llc | 0.57% | 1,842,926 | $139,306,776 | — | — | — | |
| Davidson Kempner Capital Management Lp | 2.63% | 1,619,115 | $122,388,903 | — | — | — | |
| Nexpoint Asset Management, L.P. | 8.13% | 1,541,860 | $116,549,198 | — | — | — | |
| Amundi | 0.03% | 1,469,196 | $111,056,526 | — | — | — | |
| Legal & General Group Plc | 0.02% | 1,413,564 | $106,851,301 | — | — | — | |
| Neuberger Berman Group Llc | 0.08% | 1,361,861 | $102,943,048 | — | — | — | |
| Tig Advisors, Llc | 4.82% | 1,335,117 | $100,921,494 | — | — | — | |
| First Trust Capital Management L.P. | 5.27% | 1,327,989 | $100,382,689 | — | — | — | |
| Vanguard Fiduciary Trust Co | 0.02% | 1,252,673 | $94,689,552 | — | — | — | |
| Weiss Asset Management Lp | 1.71% | 1,230,436 | $93,008,657 | — | — | — | |
| Absolute Gestao De Investimentos Ltda. | 10.42% | 1,206,999 | $91,237,054 | — | — | — | |
| Sei Investments Co | 0.08% | 1,195,073 | $90,335,529 | — | — | — | |
| Squarepoint Ops Llc | 0.19% | 1,152,092 | $87,086,634 | — | — | — | |
| Bank Of Nova Scotia | 0.15% | 1,143,287 | $86,421,065 | — | — | — | |
| Bank Of New York Mellon Corp | 0.02% | 1,136,595 | $85,915,216 | — | — | — | |
| Citadel Advisors Llc | 0.06% | 1,090,660 | $82,442,989 | — | — | — | |
| Aqr Arbitrage Llc | 1.30% | 1,048,664 | $79,268,512 | — | — | — | |
| Soros Fund Management Llc | 1.05% | 1,013,552 | $76,614,396 | — | — | — | |
| Woodline Partners Lp | 0.29% | 1,009,039 | $76,273,258 | — | — | — | |
| Alliancebernstein L.P. | 0.02% | 1,018,319 | $75,854,582 | — | — | — | |
| National Bank Of Canada | 0.07% | 864,725 | $65,365,116 | — | — | — | |
| Adage Capital Partners Gp, L.L.C. | 0.10% | 858,013 | $64,857,203 | — | — | — | |
| Kryger Capital Llc | 4.39% | 821,131 | $62,069,292 | — | — | — | |
| Highbridge Capital Management Llc | 3.94% | 821,157 | $62,038,411 | — | — | — | |
| Jpmorgan Chase & Co | 3.94% | 821,157 | $62,038,411 | — | — | — | |
| Man Group Plc | 0.12% | 761,747 | $57,580,456 | — | — | — |
Frequently asked questions about HOLX
Who owns the most HOLX stock?
The largest holders of HOLX are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for HOLOGIC INC (HOLX).
Is HOLX widely held by superinvestors?
Many widely followed stocks like HOLX appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly HOLX is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.