MTSI MACOM Technology Solutions Holdings, Inc.
MACOM Technology Solutions Holdings, Inc. (MTSI) Institutional Ownership
What the institutions did with MTSI last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| FMR LLC | 10.5M | 14.4% |
| BlackRock, Inc. | 9.5M | 13.0% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 3.6M | 4.9% |
| VANGUARD CAPITAL MANAGEMENT LLC | 3.1M | 4.2% |
| T. Rowe Price Investment Management, Inc. | 2.9M | 3.9% |
| STATE STREET CORP | 2.3M | 3.1% |
| Invesco Ltd. | 2.1M | 2.9% |
| JPMORGAN CHASE & CO | 2.1M | 2.9% |
| GEODE CAPITAL MANAGEMENT, LLC | 1.4M | 1.9% |
| WELLINGTON MANAGEMENT GROUP LLP | 1.2M | 1.6% |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | 1.2M | 1.6% |
| Capital Research Global Investors | 1.1M | 1.5% |
| NORGES BANK | 996.7K | 1.4% |
| Whale Rock Capital Management LLC | 988.8K | 1.3% |
| PRICE T ROWE ASSOCIATES INC /MD/ | 980.1K | 1.3% |
| NEUBERGER BERMAN GROUP LLC | 827.0K | 1.1% |
| GOLDMAN SACHS GROUP INC | 812.4K | 1.1% |
| FRANKLIN RESOURCES INC | 798.9K | 1.1% |
| Qube Research & Technologies Ltd | 790.7K | 1.1% |
| Polar Capital Holdings Plc | 750.5K | 1.0% |
| Jupiter Topco LLC | 674.8K | 0.9% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 666.7K | 0.9% |
| BANK OF AMERICA CORP /DE/ | 651.3K | 0.9% |
| GW&K Investment Management, LLC | 634.7K | 0.9% |
| Rafferty Asset Management, LLC | 632.8K | 0.9% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| T. Rowe Price Investment Management, Inc. | Reduced | 4.5M | 2.9M | -1.6M |
| Invesco Ltd. | Reduced | 3.7M | 2.1M | -1.5M |
| BlackRock, Inc. | Increased | 8.6M | 9.5M | +946.6K |
| Qube Research & Technologies Ltd | New | 0 | 790.7K | +790.7K |
| CITADEL ADVISORS LLC | Reduced | 590.6K | 43.7K | -546.9K |
| JANE STREET GROUP, LLC | Increased | 2.4K | 534.6K | +532.2K |
| Clearbridge Investments, LLC | New | 0 | 441.2K | +441.2K |
| UBS Group AG | Reduced | 809.4K | 389.9K | -419.5K |
| Artisan Partners Limited Partnership | Reduced | 1.0M | 627.9K | -419.3K |
| Evergreen Quality Fund GP, Ltd. | New | 0 | 396.6K | +396.6K |
| GOLDMAN SACHS GROUP INC | Increased | 430.8K | 812.4K | +381.6K |
| Allspring Global Investments Holdings, LLC | New | 0 | 362.1K | +362.1K |
| WELLINGTON MANAGEMENT GROUP LLP | Reduced | 1.5M | 1.2M | -342.3K |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | Increased | 828.4K | 1.2M | +337.8K |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | Reduced | 635.1K | 307.2K | -327.8K |
| FRANKLIN RESOURCES INC | Increased | 502.0K | 798.9K | +296.9K |
| BARCLAYS PLC | Reduced | 734.6K | 467.3K | -267.2K |
| Assenagon Asset Management S.A. | Increased | 24.0K | 274.5K | +250.4K |
| DEUTSCHE BANK AG\ | Increased | 117.6K | 362.7K | +245.2K |
| FEDERATED HERMES, INC. | Increased | 4.6K | 249.3K | +244.7K |
| DIMENSIONAL FUND ADVISORS LP | Reduced | 529.1K | 286.5K | -242.7K |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Increased | 85.0K | 321.3K | +236.3K |
| ALLIANCEBERNSTEIN L.P. | Reduced | 789.0K | 569.5K | -219.5K |
| GW&K Investment Management, LLC | Reduced | 839.1K | 634.7K | -204.3K |
| Stephens Investment Management Group LLC | Reduced | 515.8K | 316.4K | -199.4K |
| Whale Rock Capital Management LLC | Reduced | 1.2M | 988.8K | -186.2K |
| Polar Capital Holdings Plc | Reduced | 930.8K | 750.5K | -180.3K |
| MORGAN STANLEY | Reduced | 555.2K | 380.5K | -174.7K |
| BANK OF AMERICA CORP /DE/ | Increased | 480.7K | 651.3K | +170.6K |
| Rafferty Asset Management, LLC | Increased | 467.6K | 632.8K | +165.2K |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | Reduced | 306.0K | 143.2K | -162.8K |
| Analog Century Management LP | Reduced | 436.3K | 296.3K | -140.1K |
| Bank of New York Mellon Corp | Increased | 400.9K | 537.9K | +137.0K |
| E20 Capital Ltd | Sold Out | 136.8K | 0 | -136.8K |
| Capital Research Global Investors | Reduced | 1.2M | 1.1M | -136.5K |
| NEW YORK STATE COMMON RETIREMENT FUND | Reduced | 242.9K | 108.9K | -134.1K |
| WELLS FARGO & COMPANY/MN | Increased | 27.8K | 145.3K | +117.4K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Increased | 37.2K | 153.6K | +116.4K |
| LOOMIS SAYLES & CO L P | Reduced | 322.5K | 206.6K | -115.8K |
| CIBC Bancorp USA Inc. | New | 0 | 114.8K | +114.8K |
| FengHe Fund Management Pte. Ltd. | Sold Out | 110.5K | 0 | -110.5K |
| STATE STREET CORP | Increased | 2.2M | 2.3M | +109.5K |
| JPMORGAN CHASE & CO | Increased | 2.0M | 2.1M | +109.5K |
| SG Americas Securities, LLC | Increased | 24.1K | 133.2K | +109.2K |
| KENNEDY CAPITAL MANAGEMENT LLC | Reduced | 105.2K | 748 | -104.5K |
| Aristotle Capital Boston, LLC | Reduced | 206.1K | 102.8K | -103.3K |
| Amundi | Increased | 187.1K | 288.6K | +101.5K |
| Panview Capital Ltd | New | 0 | 98.0K | +98.0K |
| Fiera Capital Corp | Reduced | 224.7K | 128.5K | -96.2K |
| MILLENNIUM MANAGEMENT LLC | Increased | 335.2K | 430.4K | +95.2K |
| GENEVA CAPITAL MANAGEMENT LLC | Reduced | 343.8K | 252.7K | -91.0K |
| NOMURA HOLDINGS INC | Increased | 7.0K | 98.0K | +90.9K |
| AMERIPRISE FINANCIAL INC | Reduced | 155.1K | 65.2K | -89.9K |
| Driehaus Capital Management LLC | Reduced | 336.8K | 251.1K | -85.7K |
| FMR LLC | Reduced | 10.6M | 10.5M | -83.3K |
| FIRST TRUST ADVISORS LP | Increased | 228.4K | 311.4K | +83.0K |
| SCHRODER INVESTMENT MANAGEMENT GROUP | Reduced | 250.0K | 169.3K | -80.7K |
| TimesSquare Capital Management, LLC | Reduced | 341.2K | 261.6K | -79.6K |
| CloudAlpha Capital Management Limited/Hong Kong | Sold Out | 77.2K | 0 | -77.2K |
| THORNBURG INVESTMENT MANAGEMENT INC | Sold Out | 74.6K | 0 | -74.6K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.