# MACOM TECH SOLUTIONS HLDGS I COM

MACOM TECH SOLUTIONS HLDGS I COM is a security (CUSIP 55405Y100) tracked across SEC portfolio filings. 586 institutional managers reported $14.4B on Form 13F as of 2026-06-30; 74 registered fund positions totaling $2.3B via N-PORT as of 2026-05-31.

## Summary

- Issuer: MACOM TECH SOLUTIONS HLDGS I
- Class: COM
- CUSIP: 55405Y100
- Asset category: EC
- 13F holders: 586
- 13F value: $14.4B
- 13F period: 2026-06-30
- N-PORT fund positions: 74
- N-PORT value: $2.3B
- N-PORT report: 2026-05-31

## Top institutional holders (Form 13F)

_Showing 15 of 586 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| FMR LLC | BOSTON, MA | $2.4B | 10,610,440 |
| BlackRock, Inc. | New York, NY | $1.9B | 8,566,283 |
| [VANGUARD GROUP INC](https://search.stillhousedata.com/firm/105958) | Valley Forge, PA | $1.2B | 7,225,100 |
| STATE STREET CORP | BOSTON, MA | $478.1M | 2,152,751 |
| [MASSACHUSETTS FINANCIAL SERVICES CO /MA/](https://search.stillhousedata.com/firm/110045) | Boston, MA | $443.6M | 1,166,242 |
| JPMORGAN CHASE & CO | NEW YORK, NY | $422.3M | 2,015,630 |
| WELLINGTON MANAGEMENT GROUP LLP | BOSTON, MA | $343.8M | 1,548,035 |
| [GEODE CAPITAL MANAGEMENT, LLC](https://search.stillhousedata.com/firm/115504) | BOSTON, MA | $302.0M | 1,359,534 |
| Capital Research Global Investors | Los Angeles, CA | $271.5M | 1,222,672 |
| [Whale Rock Capital Management LLC](https://search.stillhousedata.com/firm/140746) | Boston, MA | $260.9M | 1,174,991 |
| [Artisan Partners Limited Partnership](https://search.stillhousedata.com/firm/150114) | Milwaukee, WI | $232.5M | 1,047,159 |
| [Polar Capital Holdings Plc](https://search.stillhousedata.com/firm/136133) | London, X0 | $206.7M | 930,778 |
| Bank of New York Mellon Corp | NEW YORK, NY | $204.6M | 537,879 |
| UBS Group AG | Zurich, V8 | $179.7M | 809,410 |
| NEUBERGER BERMAN GROUP LLC | NEW YORK, NY | $175.0M | 788,819 |

## Top fund holders (N-PORT)

_Showing 15 of 74 fund positions by value._

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| State Street SPDR S&P MidCap 400SM ETF Trust | SPDR S&P MIDCAP 400 ETF TRUST | $431.9M | 178.34% |
| [T. Rowe Price Mid-Cap Growth Fund, Inc.](https://search.stillhousedata.com/fund/S000002102) | T. ROWE PRICE MID-CAP GROWTH FUND, INC. | $313.6M | 139.21% |
| [SMALLCAP World Fund Inc](https://search.stillhousedata.com/fund/S000009599) | SMALLCAP World Fund Inc | $239.3M | 29.53% |
| [VANGUARD EXPLORER FUND](https://search.stillhousedata.com/fund/S000002578) | VANGUARD EXPLORER FUND | $204.5M | 93.92% |
| [VANGUARD EXTENDED MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002841) | VANGUARD INDEX FUNDS | $159.9M | 19.61% |
| [VANGUARD WINDSOR FUND](https://search.stillhousedata.com/fund/S000004417) | VANGUARD WINDSOR FUNDS | $108.8M | 44.87% |
| [T. Rowe Price Small-Cap Stock Fund, Inc.](https://search.stillhousedata.com/fund/S000002120) | T. ROWE PRICE SMALL-CAP STOCK FUND, INC. | $75.4M | 93.40% |
| [T. Rowe Price Small-Cap Value Fund, Inc.](https://search.stillhousedata.com/fund/S000002121) | T. ROWE PRICE SMALL-CAP VALUE FUND, INC. | $63.7M | 69.04% |
| [T. Rowe Price New Horizons Fund, Inc.](https://search.stillhousedata.com/fund/S000002106) | T. ROWE PRICE NEW HORIZONS FUND, INC. | $61.2M | 47.90% |
| [Fidelity Advisor Stock Selector Mid Cap Fund](https://search.stillhousedata.com/fund/S000005114) | Fidelity Advisor Series I | $54.4M | 214.15% |
| [LORD ABBETT DEVELOPING GROWTH FUND INC](https://search.stillhousedata.com/fund/S000006834) | LORD ABBETT DEVELOPING GROWTH FUND, INC. | $51.7M | 232.90% |
| [PGIM Jennison Small Company Fund](https://search.stillhousedata.com/fund/S000004629) | Prudential Jennison Small Co Fund, Inc. | $50.0M | 156.84% |
| [MFS Mid Cap Value Fund](https://search.stillhousedata.com/fund/S000002499) | MFS SERIES TRUST XI | $47.8M | 29.89% |
| [AB DISCOVERY GROWTH FUND, INC.](https://search.stillhousedata.com/fund/S000010117) | AB DISCOVERY GROWTH FUND, INC. | $41.0M | 152.42% |
| [T. Rowe Price Institutional Small-Cap Stock Fund](https://search.stillhousedata.com/fund/S000002094) | T. Rowe Price Equity Funds, Inc. | $39.6M | 91.34% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/55405Y100.md)
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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.