Who owns SiTime (SITM)
Which tracked institutional funds hold SITM, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See SITM company fundamentals →
Ownership as of the 2026-Q1 13F filings (latest filed 2026-05-18). 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
122 tracked funds added or opened SITM while 116 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
SITM’s largest tracked holder by dollar value, FMR LLC, sizes it at 0.2% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.1pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in SITM 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 423 tracked filers holding SITM, 231 increased or opened the position and 210 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 SITM 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 53
- VANGUARD PORTFOLIO MANAGEMENT LLC$481M
- VANGUARD CAPITAL MANAGEMENT LLC$343M
- Artisan Partners Limited Partnership$68M
- VANGUARD FIDUCIARY TRUST CO$53M
- Stephens Investment Management Group LLC$24M
- TUDOR INVESTMENT CORP ET AL$23M
Full exits 21
- VANGUARD GROUP INC$998M
- PUBLIC SECTOR PENSION INVESTMENT BOARD$27M
- SCALAR GAUGE MANAGEMENT, LLC$15M
- SEGALL BRYANT & HAMILL, LLC$13M
- BIT Capital GmbH$6M
- Roubaix Capital, LLC$5M
Largest adds
- FMR LLC$183M
- T. Rowe Price Investment Management, Inc.$48M
- D. E. Shaw & Co., Inc.$40M
- PRICE T ROWE ASSOCIATES INC /MD/$37M
- Aperture Investors, LLC$25M
- GEODE CAPITAL MANAGEMENT, LLC$25M
Largest trims
- BlackRock, Inc.$332M
- Invesco Ltd.$148M
- NORGES BANK$79M
- Driehaus Capital Management LLC$67M
- MORGAN STANLEY$51M
- Whale Rock Capital Management LLC$47M
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 |
|---|---|---|---|---|
| FMR LLC added | 3,969,485 | $3.0B | 24.6% | 2026-Q2 |
| BlackRock, Inc. trimmed | 2,390,065 | $1.8B | 14.8% | 2026-Q2 |
| STATE STREET CORP trimmed | 804,710 | $600M | 5.0% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 1,391,565 | $481M | 4.0% | 2026-Q1 |
| Whale Rock Capital Management LLC trimmed | 560,701 | $418M | 3.5% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 993,986 | $343M | 2.8% | 2026-Q1 |
| Invesco Ltd. trimmed | 344,373 | $257M | 2.1% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ trimmed | 322,565 | $240M | 2.0% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 624,651 | $216M | 1.8% | 2026-Q1 |
| FRANKLIN RESOURCES INC added | 530,361 | $183M | 1.5% | 2026-Q1 |
| WELLINGTON MANAGEMENT GROUP LLP trimmed | 236,078 | $176M | 1.5% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC added | 467,071 | $161M | 1.3% | 2026-Q1 |
| NORGES BANK added | 200,038 | $149M | 1.2% | 2026-Q2 |
| Bank of New York Mellon Corp added | 372,943 | $129M | 1.1% | 2026-Q1 |
| GILDER GAGNON HOWE & CO LLC trimmed | 326,068 | $113M | 0.9% | 2026-Q1 |
| ALLIANCEBERNSTEIN L.P. trimmed | 287,072 | $101M | 0.8% | 2026-Q1 |
| D. E. Shaw & Co., Inc. added | 133,984 | $100M | 0.8% | 2026-Q2 |
| NORTHERN TRUST CORP added | 267,779 | $92M | 0.8% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 265,520 | $92M | 0.8% | 2026-Q1 |
| PRINCIPAL FINANCIAL GROUP INC trimmed | 260,998 | $90M | 0.7% | 2026-Q1 |
| MORGAN STANLEY trimmed | 256,259 | $88M | 0.7% | 2026-Q1 |
| Driehaus Capital Management LLC trimmed | 227,965 | $79M | 0.7% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC trimmed | 221,196 | $76M | 0.6% | 2026-Q1 |
| Hood River Capital Management LLC trimmed | 202,750 | $70M | 0.6% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 196,452 | $68M | 0.6% | 2026-Q1 |
| Artisan Partners Limited Partnership new | 196,007 | $68M | 0.6% | 2026-Q1 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. added | 188,576 | $65M | 0.5% | 2026-Q1 |
| FULLER & THALER ASSET MANAGEMENT, INC. added | 178,255 | $62M | 0.5% | 2026-Q1 |
| JANE STREET GROUP, LLC trimmed | 176,809 | $61M | 0.5% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC added | 81,120 | $60M | 0.5% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC added | 74,411 | $55M | 0.5% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO new | 154,280 | $53M | 0.4% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ added | 151,021 | $52M | 0.4% | 2026-Q1 |
| T. Rowe Price Investment Management, Inc. added | 143,388 | $50M | 0.4% | 2026-Q1 |
| BROWN ADVISORY INC trimmed | 142,898 | $49M | 0.4% | 2026-Q1 |
| UBS Group AG trimmed | 142,877 | $49M | 0.4% | 2026-Q1 |
| LORD, ABBETT & CO. LLC trimmed | 139,084 | $48M | 0.4% | 2026-Q1 |
| FEDERATED HERMES, INC. added | 131,420 | $45M | 0.4% | 2026-Q1 |
| OBERWEIS ASSET MANAGEMENT INC/ added | 119,281 | $41M | 0.3% | 2026-Q1 |
| BAMCO INC /NY/ added | 116,961 | $40M | 0.3% | 2026-Q1 |
| JPMORGAN CHASE & CO added | 125,189 | $39M | 0.3% | 2026-Q1 |
| FengHe Fund Management Pte. Ltd. trimmed | 107,695 | $37M | 0.3% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP trimmed | 107,013 | $37M | 0.3% | 2026-Q1 |
| VOYA INVESTMENT MANAGEMENT LLC trimmed | 106,364 | $37M | 0.3% | 2026-Q1 |
| SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC trimmed | 105,017 | $36M | 0.3% | 2026-Q1 |
| TimesSquare Capital Management, LLC trimmed | 91,092 | $31M | 0.3% | 2026-Q1 |
| Styrax Capital, LP trimmed | 90,000 | $31M | 0.3% | 2026-Q1 |
| RAYMOND JAMES FINANCIAL INC added | 95,869 | $31M | 0.3% | 2026-Q1 |
| Aperture Investors, LLC added | 87,781 | $30M | 0.3% | 2026-Q1 |
| CITADEL ADVISORS LLC trimmed | 40,309 | $30M | 0.2% | 2026-Q2 |
| AQR CAPITAL MANAGEMENT LLC added | 40,305 | $29M | 0.2% | 2026-Q2 |
| Daiwa Securities Group Inc. added | 84,019 | $29M | 0.2% | 2026-Q1 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP added | 79,178 | $27M | 0.2% | 2026-Q1 |
| EVENTIDE ASSET MANAGEMENT, LLC trimmed | 73,665 | $25M | 0.2% | 2026-Q1 |
| Stephens Investment Management Group LLC new | 69,885 | $24M | 0.2% | 2026-Q1 |
| NEUBERGER BERMAN GROUP LLC added | 65,892 | $23M | 0.2% | 2026-Q1 |
| EMERALD ADVISERS, LLC trimmed | 65,762 | $23M | 0.2% | 2026-Q1 |
| SILVERCREST ASSET MANAGEMENT GROUP LLC trimmed | 64,821 | $22M | 0.2% | 2026-Q1 |
| RHUMBLINE ADVISERS added | 64,723 | $22M | 0.2% | 2026-Q1 |
| Polar Capital Holdings Plc added | 58,842 | $20M | 0.2% | 2026-Q1 |
| WCM INVESTMENT MANAGEMENT, LLC new | 27,207 | $19M | 0.2% | 2026-Q2 |
| No Street GP LP new | 55,000 | $19M | 0.2% | 2026-Q1 |
| BALYASNY ASSET MANAGEMENT L.P. added | 25,457 | $19M | 0.2% | 2026-Q2 |
| JENNISON ASSOCIATES LLC trimmed | 52,507 | $18M | 0.2% | 2026-Q1 |
| Nuveen, LLC added | 52,286 | $18M | 0.1% | 2026-Q1 |
| Point72 Asset Management, L.P. added | 24,017 | $18M | 0.1% | 2026-Q2 |
| Man Group plc added | 51,181 | $18M | 0.1% | 2026-Q1 |
| NEXT CENTURY GROWTH INVESTORS LLC added | 49,984 | $17M | 0.1% | 2026-Q1 |
| DEUTSCHE BANK AG\ added | 47,020 | $16M | 0.1% | 2026-Q1 |
| Swedbank AB trimmed | 44,200 | $15M | 0.1% | 2026-Q1 |
| Swiss National Bank added | 43,880 | $15M | 0.1% | 2026-Q1 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 42,708 | $15M | 0.1% | 2026-Q1 |
| Squarepoint Ops LLC added | 42,158 | $15M | 0.1% | 2026-Q1 |
| EMERALD MUTUAL FUND ADVISERS TRUST trimmed | 41,170 | $14M | 0.1% | 2026-Q1 |
| Russell Investments Group, Ltd. trimmed | 39,842 | $14M | 0.1% | 2026-Q1 |
| TUDOR INVESTMENT CORP ET AL trimmed | 18,378 | $14M | 0.1% | 2026-Q2 |
| CREDIT AGRICOLE S A trimmed | 38,919 | $13M | 0.1% | 2026-Q1 |
| ROYCE & ASSOCIATES LP trimmed | 35,670 | $12M | 0.1% | 2026-Q1 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 34,953 | $12M | 0.1% | 2026-Q1 |
| California Public Employees Retirement System new | 34,439 | $12M | 0.1% | 2026-Q1 |
| Champlain Investment Partners, LLC new | 33,572 | $12M | 0.1% | 2026-Q1 |
| SEI INVESTMENTS CO added | 33,524 | $12M | 0.1% | 2026-Q1 |
| PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO added | 33,255 | $11M | 0.1% | 2026-Q1 |
| Legal & General Group Plc trimmed | 30,301 | $10M | 0.1% | 2026-Q1 |
| WASATCH ADVISORS LP trimmed | 29,097 | $10M | 0.1% | 2026-Q1 |
| FIRST TRUST ADVISORS LP trimmed | 27,583 | $10M | 0.1% | 2026-Q1 |
| Apis Capital Advisors, LLC added | 27,400 | $9M | 0.1% | 2026-Q1 |
| Retirement Systems of Alabama new | 27,082 | $9M | 0.1% | 2026-Q1 |
| Nicholas Investment Partners, LP added | 26,792 | $9M | 0.1% | 2026-Q1 |
| NEW YORK STATE COMMON RETIREMENT FUND added | 26,568 | $9M | 0.1% | 2026-Q1 |
| Freestone Grove Partners LP added | 25,911 | $9M | 0.1% | 2026-Q1 |
| VANGUARD GROUP INC added | 2,825,402 | $998M | 8.3% | 2025-Q4 stale |
| Capital World Investors | 123,011 | $37M | 0.3% | 2025-Q3 stale |
| Fortress Investment Group LLC trimmed | 100,000 | $30M | 0.2% | 2025-Q3 stale |
| PUBLIC SECTOR PENSION INVESTMENT BOARD trimmed | 75,871 | $27M | 0.2% | 2025-Q4 stale |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC trimmed | 83,323 | $25M | 0.2% | 2025-Q3 stale |
| Blackstone Inc. new | 80,000 | $17M | 0.1% | 2025-Q2 stale |
| Ghisallo Capital Management LLC new | 77,618 | $17M | 0.1% | 2025-Q2 stale |
| SCALAR GAUGE MANAGEMENT, LLC added | 43,000 | $15M | 0.1% | 2025-Q4 stale |
| SEGALL BRYANT & HAMILL, LLC added | 37,844 | $13M | 0.1% | 2025-Q4 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.