Who owns Silicon Laboratories (SLAB)
Which tracked institutional funds hold SLAB, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See SLAB company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 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
101 tracked funds added or opened SLAB while 96 trimmed or exited it between 2026-Q1 and 2026-Q2 — 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
SLAB’s largest tracked holder by dollar value, BlackRock, 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 SLAB more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in SLAB 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 2026-Q1 and 2026-Q2, across 325 tracked filers holding SLAB, 158 increased or opened the position and 198 reduced or closed it; over the same quarter, open-market insider Form 4s were net sales.
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 SLAB between the 2026-Q1 and 2026-Q2 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 11
- HBK INVESTMENTS L P$219M
- Nearwater Capital Markets, Ltd$10M
- Jupiter Topco LLC$3M
- Headlands Technologies LLC$3M
- DARK FOREST CAPITAL MANAGEMENT LP$3M
- Lido Advisors, LLC$2M
Full exits 43
- Thrivent Financial for Lutherans$75M
- MACKENZIE FINANCIAL CORP$52M
- Clearbridge Investments, LLC$51M
- LOOMIS SAYLES & CO L P$46M
- Stephens Investment Management Group LLC$42M
- Sand Grove Capital Management LLP$23M
Largest adds
- BlackRock, Inc.$365M
- MILLENNIUM MANAGEMENT LLC$124M
- UBS Group AG$89M
- NORGES BANK$87M
- BALYASNY ASSET MANAGEMENT L.P.$84M
- AQR Arbitrage LLC$76M
Largest trims
- NOMURA ASSET MANAGEMENT INTERNATIONAL INC.$134M
- FEDERATED HERMES, INC.$79M
- AMERICAN CENTURY COMPANIES INC$71M
- Capital Research Global Investors$66M
- AQR CAPITAL MANAGEMENT LLC$48M
- CITADEL ADVISORS LLC$47M
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BlackRock, Inc. added | 5,195,073 | $1.1B | 17.4% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC trimmed | 2,087,410 | $456M | 7.0% | 2026-Q2 |
| STATE STREET CORP added | 1,623,721 | $355M | 5.4% | 2026-Q2 |
| BALYASNY ASSET MANAGEMENT L.P. added | 1,559,676 | $341M | 5.2% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 1,485,683 | $325M | 5.0% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC added | 1,003,736 | $219M | 3.4% | 2026-Q2 |
| HBK INVESTMENTS L P new | 1,000,000 | $219M | 3.3% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 905,357 | $198M | 3.0% | 2026-Q2 |
| UBS Group AG added | 769,780 | $168M | 2.6% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 746,835 | $163M | 2.5% | 2026-Q2 |
| Pentwater Capital Management LP added | 741,725 | $162M | 2.5% | 2026-Q2 |
| AQR Arbitrage LLC added | 643,007 | $141M | 2.2% | 2026-Q2 |
| Qube Research & Technologies Ltd added | 540,698 | $118M | 1.8% | 2026-Q2 |
| MORGAN STANLEY trimmed | 540,037 | $118M | 1.8% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP trimmed | 504,136 | $110M | 1.7% | 2026-Q2 |
| Invesco Ltd. added | 477,419 | $104M | 1.6% | 2026-Q2 |
| Capital Research Global Investors trimmed | 471,546 | $103M | 1.6% | 2026-Q2 |
| NORGES BANK added | 432,970 | $95M | 1.4% | 2026-Q2 |
| Pathstone Holdings, LLC added | 426,970 | $93M | 1.4% | 2026-Q2 |
| NORTHERN TRUST CORP added | 411,399 | $90M | 1.4% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 383,923 | $84M | 1.3% | 2026-Q2 |
| LMR Partners LLP added | 379,093 | $83M | 1.3% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. added | 371,567 | $77M | 1.2% | 2026-Q2 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. trimmed | 343,163 | $75M | 1.1% | 2026-Q2 |
| Kryger Capital LLC added | 329,090 | $72M | 1.1% | 2026-Q2 |
| HSBC HOLDINGS PLC added | 307,503 | $67M | 1.0% | 2026-Q2 |
| JPMORGAN CHASE & CO added | 305,461 | $67M | 1.0% | 2026-Q2 |
| ALPINE ASSOCIATES MANAGEMENT INC. added | 298,739 | $65M | 1.0% | 2026-Q2 |
| NEUBERGER BERMAN GROUP LLC added | 282,106 | $62M | 0.9% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC trimmed | 280,489 | $61M | 0.9% | 2026-Q2 |
| Magnetar Financial LLC added | 251,225 | $55M | 0.8% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 236,269 | $52M | 0.8% | 2026-Q2 |
| Assenagon Asset Management S.A. trimmed | 223,975 | $49M | 0.7% | 2026-Q2 |
| Bank of New York Mellon Corp trimmed | 209,089 | $46M | 0.7% | 2026-Q2 |
| Verition Fund Management LLC added | 186,776 | $41M | 0.6% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ trimmed | 178,163 | $39M | 0.6% | 2026-Q2 |
| TIG Advisors, LLC added | 168,163 | $37M | 0.6% | 2026-Q2 |
| MARSHALL WACE, LLP added | 150,725 | $33M | 0.5% | 2026-Q2 |
| WATER ISLAND CAPITAL LLC added | 148,138 | $32M | 0.5% | 2026-Q2 |
| Allianz Asset Management GmbH trimmed | 145,537 | $31M | 0.5% | 2026-Q2 |
| Man Group plc added | 143,337 | $31M | 0.5% | 2026-Q2 |
| Grantham, Mayo, Van Otterloo & Co. LLC added | 134,525 | $29M | 0.4% | 2026-Q2 |
| Leeward Investments, LLC - MA trimmed | 120,591 | $26M | 0.4% | 2026-Q2 |
| Sagefield Capital LP added | 118,773 | $26M | 0.4% | 2026-Q2 |
| Squarepoint Ops LLC added | 114,521 | $25M | 0.4% | 2026-Q2 |
| Nuveen, LLC trimmed | 114,455 | $25M | 0.4% | 2026-Q2 |
| RHUMBLINE ADVISERS added | 100,124 | $22M | 0.3% | 2026-Q2 |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND trimmed | 97,252 | $21M | 0.3% | 2026-Q2 |
| CITADEL ADVISORS LLC trimmed | 96,442 | $21M | 0.3% | 2026-Q2 |
| TUDOR INVESTMENT CORP ET AL trimmed | 94,117 | $21M | 0.3% | 2026-Q2 |
| NINE MASTS CAPITAL Ltd trimmed | 93,749 | $20M | 0.3% | 2026-Q2 |
| DAYMARK WEALTH PARTNERS, LLC added | 90,520 | $20M | 0.3% | 2026-Q2 |
| FMR LLC added | 80,925 | $18M | 0.3% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 80,508 | $18M | 0.3% | 2026-Q2 |
| PRINCIPAL FINANCIAL GROUP INC added | 77,061 | $17M | 0.3% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS added | 73,505 | $16M | 0.2% | 2026-Q2 |
| Swiss National Bank added | 66,100 | $14M | 0.2% | 2026-Q2 |
| California Public Employees Retirement System trimmed | 59,634 | $13M | 0.2% | 2026-Q2 |
| WINTON GROUP Ltd added | 55,098 | $12M | 0.2% | 2026-Q2 |
| Kintayl Capital LP added | 52,875 | $12M | 0.2% | 2026-Q2 |
| STATE OF WISCONSIN INVESTMENT BOARD added | 50,909 | $11M | 0.2% | 2026-Q2 |
| Legal & General Group Plc added | 50,636 | $11M | 0.2% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 50,498 | $11M | 0.2% | 2026-Q2 |
| Nearwater Capital Markets, Ltd new | 47,500 | $10M | 0.2% | 2026-Q2 |
| Public Sector Pension Investment Board | 44,548 | $10M | 0.1% | 2026-Q2 |
| Retirement Systems of Alabama trimmed | 44,213 | $10M | 0.1% | 2026-Q2 |
| DEUTSCHE BANK AG\ added | 43,264 | $9M | 0.1% | 2026-Q2 |
| AQR CAPITAL MANAGEMENT LLC trimmed | 42,883 | $9M | 0.1% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 42,521 | $9M | 0.1% | 2026-Q2 |
| KORNITZER CAPITAL MANAGEMENT INC /KS trimmed | 42,160 | $9M | 0.1% | 2026-Q2 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. trimmed | 40,865 | $9M | 0.1% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN added | 40,666 | $9M | 0.1% | 2026-Q2 |
| Carmignac Gestion added | 40,340 | $9M | 0.1% | 2026-Q2 |
| GABELLI & Co INVESTMENT ADVISERS, INC. added | 40,279 | $9M | 0.1% | 2026-Q2 |
| GABELLI FUNDS LLC added | 39,731 | $9M | 0.1% | 2026-Q2 |
| Centiva Capital, LP added | 38,567 | $8M | 0.1% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM added | 38,101 | $8M | 0.1% | 2026-Q2 |
| MetLife Investment Management, LLC added | 34,641 | $8M | 0.1% | 2026-Q2 |
| Schonfeld Strategic Advisors LLC trimmed | 34,030 | $7M | 0.1% | 2026-Q2 |
| Engineers Gate Manager LP added | 33,304 | $7M | 0.1% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC trimmed | 32,442 | $7M | 0.1% | 2026-Q2 |
| VANGUARD ASSET MANAGEMENT, Ltd added | 31,897 | $7M | 0.1% | 2026-Q2 |
| Alberta Investment Management Corp | 30,000 | $7M | 0.1% | 2026-Q2 |
| VAN ECK ASSOCIATES CORP added | 26,811 | $6M | 0.1% | 2026-Q2 |
| CITIGROUP INC added | 26,235 | $6M | 0.1% | 2026-Q2 |
| MOORE CAPITAL MANAGEMENT, LP added | 26,000 | $6M | 0.1% | 2026-Q2 |
| Polar Asset Management Partners Inc. added | 25,783 | $6M | 0.1% | 2026-Q2 |
| Governors Lane LP | 25,311 | $6M | 0.1% | 2026-Q2 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE trimmed | 24,851 | $5M | 0.1% | 2026-Q2 |
| BARCLAYS PLC trimmed | 24,178 | $5M | 0.1% | 2026-Q2 |
| Creative Planning added | 23,431 | $5M | 0.1% | 2026-Q2 |
| STIFEL FINANCIAL CORP trimmed | 21,156 | $5M | 0.1% | 2026-Q2 |
| FRANKLIN RESOURCES INC trimmed | 20,380 | $4M | 0.1% | 2026-Q2 |
| INTECH INVESTMENT MANAGEMENT LLC added | 20,114 | $4M | 0.1% | 2026-Q2 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 20,094 | $4M | 0.1% | 2026-Q2 |
| New York Life Investment Management LLC added | 19,979 | $4M | 0.1% | 2026-Q2 |
| Russell Investments Group, Ltd. added | 19,444 | $4M | 0.1% | 2026-Q2 |
| DLD Asset Management, LP added | 18,712 | $4M | 0.1% | 2026-Q2 |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS trimmed | 17,896 | $4M | 0.1% | 2026-Q2 |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC added | 17,698 | $4M | 0.1% | 2026-Q2 |
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.