Silicon Laboratories Inc.: which funds bought and sold

Institutions that bought and sold Silicon Laboratories shares in Q2 2026, from the holdings they reported to the SEC on Form 13F for March 31, 2026 and June 30, 2026.

Between March 31, 2026 and June 30, 2026, 157 institutions that filed 13F reports for both quarters added to or opened positions in Silicon Laboratories, and 182 cut or closed them. Together they added a net 665K shares, +2.2% on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 374K shares (+4.5%); index fund managers were net buyers of 394K shares (+3.3%). 29 opened a new position and 55 sold out entirely.

Bought, Q2 2026 157 institutions, 29 of them new holders Sold, Q2 2026 182 institutions, 55 of them sold out

Net change, all compared +665K shares (+2.2%)

Net change, active managers +374K shares (+4.5%), 28 bought, 25 sold

Buyers versus sellers

institutions compared, 401

157 bought 62 182 sold

Active managers and hedge funds 28 bought · 25 sold · +374K

Index fund managers 7 bought · 4 sold · +394K

Other institutions 122 bought · 153 sold · −103K

Biggest buyers

by change in shares held

Biggest buyers
Institution	Change in shares	Shares June 30, 2026	Value
HBK Investments L P Hedge fund	+1.0M New position	1.0M	$219M
Millennium Management LLC Hedge fund	+547K +119.5%	1.0M	$219M
UBS Group AG	+389K +102.0%	770K	$168M
AQR Arbitrage LLC	+334K +108.2%	643K	$141M
Balyasny Asset Management L.P. Hedge fund	+326K +26.4%	1.6M	$341M
Qube Research & Technologies Ltd Hedge fund	+304K +128.3%	541K	$118M
Pentwater Capital Management LP Hedge fund	+242K +48.3%	742K	$162M
Goldman Sachs Group Inc	+227K +43.6%	747K	$163M
Assenagon Asset Management S.A.	+209K +87.2%	448K	$97.9M
Blackrock, Inc. Index funds	+201K +4.0%	5.2M	$1.1B
Jpmorgan Chase & Co	+187K +158.9%	305K	$67.2M
Neuberger Berman Group LLC Active manager	+163K +136.3%	282K	$61.7M
State Street Corp Index funds	+157K +10.7%	1.6M	$355M
Kryger Capital LLC	+150K +83.5%	329K	$71.9M
LMR Partners LLP Hedge fund	+141K +59.2%	379K	$82.9M
Alliancebernstein L.P. Active manager	+126K +51.2%	372K	$77.3M
Marshall Wace, LLP Hedge fund	+122K +419.9%	151K	$32.9M
HSBC Holdings PLC	+93K +43.6%	308K	$67.5M
Water Island Capital LLC	+90K +153.6%	148K	$32.4M
Sagefield Capital LP	+78K +193.8%	119K	$26M

Biggest buyers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
HBK Investments L P Hedge fund	+1.0M New position	1.0M	$219M
Millennium Management LLC Hedge fund	+547K +119.5%	1.0M	$219M
Balyasny Asset Management L.P. Hedge fund	+326K +26.4%	1.6M	$341M
Qube Research & Technologies Ltd Hedge fund	+304K +128.3%	541K	$118M
Pentwater Capital Management LP Hedge fund	+242K +48.3%	742K	$162M
Neuberger Berman Group LLC Active manager	+163K +136.3%	282K	$61.7M
LMR Partners LLP Hedge fund	+141K +59.2%	379K	$82.9M
Alliancebernstein L.P. Active manager	+126K +51.2%	372K	$77.3M
Marshall Wace, LLP Hedge fund	+122K +419.9%	151K	$32.9M
Grantham, Mayo, Van Otterloo & Co. LLC Active manager	+76K +129.2%	135K	$29.4M

Biggest sellers

by change in shares held

Biggest sellers
Institution	Change in shares	Shares June 30, 2026	Value
Nomura Asset Management International Inc.	−645K −97.6%	16K	$3.5M
Federated Hermes, Inc. Active manager	−381K −99.3%	2,548	$556,891
American Century Companies Inc Active manager	−356K −55.9%	280K	$61.3M
Thrivent Financial For Lutherans	−355K −98.0%	7,324	$1.6M
Capital Research Global Investors Active manager	−340K −41.9%	472K	$103M
Mackenzie Financial Corp	−250K Sold out	0	—
Clearbridge Investments, LLC Active manager	−245K Sold out	0	—
Citadel Advisors LLC Hedge fund	−245K −71.8%	96K	$21.1M
AQR Capital Management LLC Hedge fund	−232K −84.4%	43K	$9.4M
Loomis Sayles & Co L P Active manager	−223K Sold out	0	—
Adage Capital Partners Gp, L.L.C. Hedge fund	−223K −39.4%	343K	$75M
Stephens Investment Management Group LLC	−202K Sold out	0	—
Sona Asset Management (US) LLC Active manager	−165K −94.3%	10K	$2.2M
Sand Grove Capital Management LLP	−112K Sold out	0	—
Renaissance Technologies LLC Hedge fund	−105K −67.4%	50K	$11M
Healthcare Of Ontario Pension Plan Trust Fund	−75K −43.5%	97K	$21.3M
Arrowstreet Capital, Limited Partnership Hedge fund	−66K −91.7%	5,929	$1.3M
Woodline Partners LP Hedge fund	−66K Sold out	0	—
Slotnik Capital, LLC	−66K Sold out	0	—
Franklin Resources Inc Active manager	−56K −73.3%	20K	$4.5M

Biggest sellers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Federated Hermes, Inc. Active manager	−381K −99.3%	2,548	$556,891
American Century Companies Inc Active manager	−356K −55.9%	280K	$61.3M
Capital Research Global Investors Active manager	−340K −41.9%	472K	$103M
Clearbridge Investments, LLC Active manager	−245K Sold out	0	—
Citadel Advisors LLC Hedge fund	−245K −71.8%	96K	$21.1M
AQR Capital Management LLC Hedge fund	−232K −84.4%	43K	$9.4M
Loomis Sayles & Co L P Active manager	−223K Sold out	0	—
Adage Capital Partners Gp, L.L.C. Hedge fund	−223K −39.4%	343K	$75M
Sona Asset Management (US) LLC Active manager	−165K −94.3%	10K	$2.2M
Renaissance Technologies LLC Hedge fund	−105K −67.4%	50K	$11M

New positions

largest by value

Institution	Shares	Value June 30, 2026
HBK Investments L PHedge fund	1.0M	$219M
Nearwater Capital Markets, Ltd	48K	$10.4M
Headlands Technologies LLC	14K	$3M
Dark Forest Capital Management LP	12K	$2.6M
Gsa Capital Partners LLP	11K	$2.4M
Lido Advisors, LLC	10K	$2.2M
Xtx Topco Ltd	9,007	$2M
Tokio Marine Asset Management Co Ltd	8,111	$1.8M
Hancock Whitney Corp	3,208	$701,140
Brevan Howard Capital Management LPHedge fund	2,677	$585,085

Sold out

largest by value

Institution	Shares	Value March 31, 2026
Mackenzie Financial Corp	250K	$52M
Clearbridge Investments, LLCActive manager	245K	$51M
Loomis Sayles & Co L PActive manager	223K	$46.5M
Stephens Investment Management Group LLC	202K	$42.1M
Sand Grove Capital Management LLP	112K	$23.4M
Woodline Partners LPHedge fund	66K	$13.7M
Slotnik Capital, LLC	66K	$13.6M
Fort Baker Capital Management LP	54K	$11.2M
Wellington Management Group LLPActive manager	50K	$10.3M
Canada Pension Plan Investment Board	44K	$9.2M

Who holds the shares

13F holdings at June 30, 2026

Institutions reporting: 352
Ten largest holders: 52.7%
Index fund managers: 40.0%
Active managers and hedge funds: 28.2%

Buying and selling by type of institution, March 31, 2026 to June 30, 2026
Type	Bought	Sold	New	Sold out	Net change in shares	Net %
Active managers and hedge funds	28	25	3	8	+374K	+4.5%
Index fund managers	7	4	0	0	+394K	+3.3%
Other institutions	122	153	26	47	−103K	−1.1%

Active managers and hedge funds: a list we maintain of about 400 well-known stock-picking firms and hedge funds, matched by SEC registration number (CIK) and checked against the filer names each quarter. Index fund managers: the large index houses, such as BlackRock, Vanguard, State Street, Geode and Northern Trust. Every other filer (banks, brokers, wealth managers, pension funds, insurers and firms not on the list) counts as another institution. A firm that files under several SEC registrations appears once for each.

What these filings can and cannot tell you

Form 13F lists the long positions in US-listed shares held by investment managers with more than $100 million in such holdings. Managers file it up to 45 days after each quarter ends, so this page shows what funds held at the end of each quarter, not what they are doing now: a position may have changed since. Short positions, most derivatives and smaller managers are not included, and a cut can mean a fund lost clients or rebalanced rather than a view on Silicon Laboratories.

Only managers that filed a holdings report for both quarters are compared (401 here). 11 other holders are left out: first-time or late filers, firms that changed their SEC registration, and filings that withheld positions under confidential treatment, any of which would otherwise look like a new position or a sale. Figures are as reported by each manager in the SEC's quarterly 13F data sets; option positions are excluded.

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