Who owns OMCL (OMCL)
Which tracked institutional funds hold OMCL, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See OMCL company fundamentals →
Ownership as of the 2026-Q1 13F filings. 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
42 tracked funds added or opened OMCL while 117 trimmed or exited it between 2025-Q4 and 2026-Q1 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
OMCL’s largest tracked holder by dollar value, VANGUARD GROUP INC, sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp gap the other way — the median holder sizes OMCL more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in OMCL divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2025-Q4 and 2026-Q1, across 273 tracked filers holding OMCL, 139 increased or opened the position and 129 reduced or closed it; over the same quarter, open-market insider Form 4 buying and selling roughly offset.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in OMCL between the 2025-Q4 and 2026-Q1 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 20
- VANGUARD PORTFOLIO MANAGEMENT LLC$107M
- VANGUARD CAPITAL MANAGEMENT LLC$65M
- First Light Asset Management, LLC$16M
- WCM INVESTMENT MANAGEMENT, LLC$10M
- VANGUARD FIDUCIARY TRUST CO$10M
- BURNEY CO/$7M
Full exits 19
- VANGUARD GROUP INC$235M
- CADIAN CAPITAL MANAGEMENT, LP$52M
- TWO SIGMA ADVISERS, LP$12M
- CITADEL ADVISORS LLC$11M
- Hillsdale Investment Management Inc.$7M
- Roubaix Capital, LLC$5M
Largest adds
- JACOBS LEVY EQUITY MANAGEMENT, INC$13M
- Empowered Funds, LLC$8M
- TWO SIGMA INVESTMENTS, LP$7M
- SUSQUEHANNA INTERNATIONAL GROUP, LLP$6M
- MARSHALL WACE, LLP$3M
- Bullseye Asset Management LLC$2M
Largest trims
- BlackRock, Inc.$175M
- STATE STREET CORP$24M
- D. E. Shaw & Co., Inc.$23M
- DIMENSIONAL FUND ADVISORS LP$23M
- LAZARD ASSET MANAGEMENT LLC$22M
- FEDERATED HERMES, INC.$21M
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BlackRock, Inc. trimmed | 4,971,124 | $166M | 8.8% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 3,214,766 | $107M | 5.7% | 2026-Q1 |
| WELLINGTON MANAGEMENT GROUP LLP added | 2,707,046 | $90M | 4.8% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP added | 2,450,385 | $82M | 4.4% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC added | 2,288,570 | $76M | 4.1% | 2026-Q1 |
| STATE STREET CORP trimmed | 1,950,539 | $65M | 3.5% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 1,934,517 | $65M | 3.4% | 2026-Q1 |
| LAZARD ASSET MANAGEMENT LLC trimmed | 1,470,074 | $49M | 2.6% | 2026-Q1 |
| Sumitomo Mitsui Trust Group, Inc. added | 1,410,865 | $47M | 2.5% | 2026-Q1 |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. trimmed | 1,183,617 | $40M | 2.1% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 1,142,463 | $38M | 2.0% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP added | 1,051,801 | $35M | 1.9% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 654,165 | $22M | 1.2% | 2026-Q1 |
| MORGAN STANLEY added | 616,616 | $21M | 1.1% | 2026-Q1 |
| Liontrust Investment Partners LLP | 440,128 | $20M | 1.1% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ added | 580,875 | $19M | 1.0% | 2026-Q1 |
| D. E. Shaw & Co., Inc. trimmed | 534,611 | $18M | 0.9% | 2026-Q1 |
| Boston Partners added | 531,305 | $18M | 0.9% | 2026-Q1 |
| ROYAL BANK OF CANADA trimmed | 532,172 | $18M | 0.9% | 2026-Q1 |
| JACOBS LEVY EQUITY MANAGEMENT, INC added | 502,700 | $17M | 0.9% | 2026-Q1 |
| First Light Asset Management, LLC added | 489,846 | $16M | 0.9% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC added | 483,043 | $16M | 0.9% | 2026-Q1 |
| NORTHERN TRUST CORP added | 477,085 | $16M | 0.8% | 2026-Q1 |
| Bank of New York Mellon Corp added | 433,454 | $14M | 0.8% | 2026-Q1 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. trimmed | 389,836 | $13M | 0.7% | 2026-Q1 |
| Nuveen, LLC trimmed | 388,648 | $13M | 0.7% | 2026-Q1 |
| ACADIAN ASSET MANAGEMENT LLC trimmed | 382,789 | $13M | 0.7% | 2026-Q1 |
| FMR LLC added | 370,155 | $12M | 0.7% | 2026-Q1 |
| JPMORGAN CHASE & CO trimmed | 378,468 | $12M | 0.7% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 353,397 | $12M | 0.6% | 2026-Q1 |
| Qube Research & Technologies Ltd added | 312,456 | $10M | 0.6% | 2026-Q1 |
| CRAMER ROSENTHAL MCGLYNN LLC added | 303,431 | $10M | 0.5% | 2026-Q1 |
| PRINCIPAL FINANCIAL GROUP INC added | 296,321 | $10M | 0.5% | 2026-Q1 |
| WCM INVESTMENT MANAGEMENT, LLC added | 302,411 | $10M | 0.5% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 287,990 | $10M | 0.5% | 2026-Q1 |
| AMERIPRISE FINANCIAL INC trimmed | 284,459 | $9M | 0.5% | 2026-Q1 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP added | 279,368 | $9M | 0.5% | 2026-Q1 |
| PANAGORA ASSET MANAGEMENT INC added | 263,502 | $9M | 0.5% | 2026-Q1 |
| Empowered Funds, LLC added | 262,043 | $9M | 0.5% | 2026-Q1 |
| BURNEY CO/ new | 213,242 | $7M | 0.4% | 2026-Q1 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 199,357 | $7M | 0.4% | 2026-Q1 |
| Invesco Ltd. added | 199,029 | $7M | 0.4% | 2026-Q1 |
| Point72 Asset Management, L.P. added | 186,095 | $6M | 0.3% | 2026-Q1 |
| BANK OF MONTREAL /CAN/ added | 179,261 | $6M | 0.3% | 2026-Q1 |
| EVR Research LP new | 173,000 | $6M | 0.3% | 2026-Q1 |
| Public Sector Pension Investment Board added | 160,559 | $5M | 0.3% | 2026-Q1 |
| Legal & General Group Plc trimmed | 159,710 | $5M | 0.3% | 2026-Q1 |
| SEI INVESTMENTS CO added | 148,394 | $5M | 0.3% | 2026-Q1 |
| Pier Capital, LLC trimmed | 143,086 | $5M | 0.3% | 2026-Q1 |
| WELLS FARGO & COMPANY/MN trimmed | 139,964 | $5M | 0.2% | 2026-Q1 |
| Redmond Asset Management, LLC trimmed | 139,485 | $5M | 0.2% | 2026-Q1 |
| Bastion Asset Management Inc. new | 131,647 | $5M | 0.2% | 2026-Q1 |
| MARSHALL WACE, LLP added | 138,390 | $5M | 0.2% | 2026-Q1 |
| PEREGRINE CAPITAL MANAGEMENT LLC added | 134,894 | $5M | 0.2% | 2026-Q1 |
| Dana Investment Advisors, Inc. added | 132,879 | $4M | 0.2% | 2026-Q1 |
| RHUMBLINE ADVISERS added | 131,271 | $4M | 0.2% | 2026-Q1 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 130,908 | $4M | 0.2% | 2026-Q1 |
| FEDERATED HERMES, INC. trimmed | 130,902 | $4M | 0.2% | 2026-Q1 |
| UBS Group AG trimmed | 129,762 | $4M | 0.2% | 2026-Q1 |
| MARTIN & CO INC /TN/ added | 126,687 | $4M | 0.2% | 2026-Q1 |
| Curi Capital, LLC trimmed | 126,171 | $4M | 0.2% | 2026-Q1 |
| Universal- Beteiligungs- und Servicegesellschaft mbH trimmed | 125,054 | $4M | 0.2% | 2026-Q1 |
| NOMURA HOLDINGS INC added | 121,270 | $4M | 0.2% | 2026-Q1 |
| STRS OHIO trimmed | 120,486 | $4M | 0.2% | 2026-Q1 |
| MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC trimmed | 117,110 | $4M | 0.2% | 2026-Q1 |
| TRILLIUM ASSET MANAGEMENT, LLC trimmed | 102,285 | $4M | 0.2% | 2026-Q1 |
| SYSTEMATIC FINANCIAL MANAGEMENT LP trimmed | 104,298 | $3M | 0.2% | 2026-Q1 |
| VICTORY CAPITAL MANAGEMENT INC trimmed | 104,169 | $3M | 0.2% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC added | 104,130 | $3M | 0.2% | 2026-Q1 |
| NORDEA INVESTMENT MANAGEMENT AB trimmed | 107,335 | $3M | 0.2% | 2026-Q1 |
| Connor, Clark & Lunn Investment Management Ltd. trimmed | 100,963 | $3M | 0.2% | 2026-Q1 |
| TORONTO DOMINION BANK added | 92,743 | $3M | 0.2% | 2026-Q1 |
| Swiss National Bank trimmed | 88,800 | $3M | 0.2% | 2026-Q1 |
| FIRST TRUST ADVISORS LP trimmed | 85,309 | $3M | 0.2% | 2026-Q1 |
| Bullseye Asset Management LLC added | 81,605 | $3M | 0.1% | 2026-Q1 |
| CONNORS INVESTOR SERVICES INC trimmed | 77,963 | $3M | 0.1% | 2026-Q1 |
| Avory & Company, LLC trimmed | 77,137 | $3M | 0.1% | 2026-Q1 |
| Russell Investments Group, Ltd. added | 70,066 | $2M | 0.1% | 2026-Q1 |
| Trexquant Investment LP added | 69,471 | $2M | 0.1% | 2026-Q1 |
| ALLIANCEBERNSTEIN L.P. trimmed | 50,906 | $2M | 0.1% | 2026-Q1 |
| Squarepoint Ops LLC added | 66,612 | $2M | 0.1% | 2026-Q1 |
| VANGUARD GROUP INC trimmed | 5,186,673 | $235M | 12.5% | 2025-Q4 stale |
| CADIAN CAPITAL MANAGEMENT, LP trimmed | 1,142,555 | $52M | 2.8% | 2025-Q4 stale |
| Champlain Investment Partners, LLC trimmed | 1,450,802 | $51M | 2.7% | 2025-Q1 stale |
| ArrowMark Colorado Holdings LLC trimmed | 714,746 | $25M | 1.3% | 2025-Q1 stale |
| MACQUARIE GROUP LTD trimmed | 763,640 | $23M | 1.2% | 2025-Q3 stale |
| TWO SIGMA ADVISERS, LP added | 271,400 | $12M | 0.7% | 2025-Q4 stale |
| OBERWEIS ASSET MANAGEMENT INC/ | 333,200 | $12M | 0.6% | 2025-Q1 stale |
| CITADEL ADVISORS LLC trimmed | 252,062 | $11M | 0.6% | 2025-Q4 stale |
| Hillsdale Investment Management Inc. added | 144,627 | $7M | 0.3% | 2025-Q4 stale |
| Pacer Advisors, Inc. trimmed | 204,676 | $6M | 0.3% | 2025-Q2 stale |
| Quantedge Capital Pte Ltd added | 156,300 | $5M | 0.3% | 2025-Q1 stale |
| Roubaix Capital, LLC added | 111,815 | $5M | 0.3% | 2025-Q4 stale |
| TUDOR INVESTMENT CORP ET AL new | 111,605 | $4M | 0.2% | 2025-Q1 stale |
| Advantage Alpha Capital Partners LP added | 123,354 | $4M | 0.2% | 2025-Q3 stale |
| NICHOLAS COMPANY, INC. added | 119,018 | $4M | 0.2% | 2025-Q3 stale |
| Edgestream Partners, L.P. added | 65,652 | $3M | 0.2% | 2025-Q4 stale |
| NFJ INVESTMENT GROUP, LLC trimmed | 62,164 | $3M | 0.1% | 2025-Q4 stale |
| Cubist Systematic Strategies, LLC added | 88,967 | $3M | 0.1% | 2025-Q3 stale |
| WINTON GROUP Ltd added | 91,574 | $3M | 0.1% | 2025-Q2 stale |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.