Stocks › MTSI
MACOM Technology Solutions Holdings, Inc.
MTSI·Nasdaq·
United States·USD
United States·USD$350.67
+22.37 (+6.81%)
Close · Oct 6, 2026 · Close Prices from Tiingo.com
MTSI
MACOM Technology Solutions Holdings, Inc. · Nasdaq
Nasdaq 100S&P 500
Filings
Default90D1Y5YALL
MTSIS&P 500 (rebased)
Congress BuyCongress SellInsider BuyInsider SellForm 1448-K ResultsLobbying
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Daily closes, adjusted for splits and dividends · Close Prices from Tiingo.comHover a marker, every one is a filing · move across the line for the crosshair
Congressional Trades
Recent trades of MTSI by members of U.S. Congress · 16 on record · 6 in the last 12 months
Whale Activity
Position changes in MTSI reported for 2026-06-30 by 16 tracked institutional filers
- Increased5
- New0
- Held0
- Decreased2
- Closed1
- No prior filing8
| Filer | Shares | Value | Change |
|---|---|---|---|
| BlackRock, Inc. | 9.5M | $3.62B | increased |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 3.6M | $1.37B | increased |
| VANGUARD CAPITAL MANAGEMENT LLC | 3.1M | $1.17B | increased |
| MILLENNIUM MANAGEMENT LLC | 430.4K | $163.7M | increased |
| Stephens Investment Management Group LLC | 316.4K | $120.4M | — |
| Point72 Asset Management, L.P. | 67.5K | $25.7M | decreased |
| Brevan Howard Capital Management LP | 61.9K | $23.6M | — |
| TWO SIGMA INVESTMENTS, LP | 53.0K | $20.1M | increased |
| CITADEL ADVISORS LLC | 43.7K | $16.6M | decreased |
| Emerald Investment Advisers, LLC | 29.2K | $11.1M | — |
| DISCOVERY CAPITAL MANAGEMENT, LLC / CT | 26.9K | $10.2M | — |
| Informed Momentum Co LLC | 23.7K | $9.0M | — |
KeyVex tracks a curated set of large 13F filers plus the largest positions in recent filings, so this is a sample of institutional activity, not the whole market.
Insider Trading
Net shares bought (+) or sold (−) on the open market by MTSI insiders, by quarter · Form 4
Recent Insider Transactions
1,963 transactions on record · newest first
| Insider | Type | Shares | Price | Value | Date | |
|---|---|---|---|---|---|---|
| Roth Ambra R.SVP, GC and Secretary | Sale | −653 | $300.00 | $196K | Oct 1, 2026 | Form 4 ↗ |
| Dennehy RobertSenior VP and COO | Sale | −252 | $275.20 | $69K | Aug 28, 2026 | Form 4 ↗ |
| Kober JohnSenior VP and CFO | Sale | −900 | $325.26 | $293K | Aug 17, 2026 | Form 4 ↗ |
| Kober JohnSenior VP and CFO | Sale | −500 | $326.51 | $163K | Aug 17, 2026 | Form 4 ↗ |
| Kober JohnSenior VP and CFO | Sale | −400 | $330.67 | $132K | Aug 17, 2026 | Form 4 ↗ |
| Kober JohnSenior VP and CFO | Sale | −400 | $323.97 | $130K | Aug 17, 2026 | Form 4 ↗ |
| Kober JohnSenior VP and CFO | Sale | −300 | $329.75 | $99K | Aug 17, 2026 | Form 4 ↗ |
| Kober JohnSenior VP and CFO | Sale | −1,699 | $327.78 | $557K | Aug 17, 2026 | Form 4 ↗ |
| Kober JohnSenior VP and CFO | Sale | −1,600 | $328.78 | $526K | Aug 17, 2026 | Form 4 ↗ |
| Kober JohnSenior VP and CFO | Sale | −1,590 | $320.57 | $510K | Aug 17, 2026 | Form 4 ↗ |
| Hwang Donghyun ThomasSVP, Global Sales | Sale | −100 | $391.94 | $39K | Jun 25, 2026 | Form 4 ↗ |
| Hwang Donghyun ThomasSVP, Global Sales | Sale | −291 | $389.74 | $113K | Jun 25, 2026 | Form 4 ↗ |
| Hwang Donghyun ThomasSVP, Global Sales | Sale | −400 | $388.65 | $155K | Jun 25, 2026 | Form 4 ↗ |
| Hwang Donghyun ThomasSVP, Global Sales | Sale | −200 | $387.25 | $77K | Jun 25, 2026 | Form 4 ↗ |
| Hwang Donghyun ThomasSVP, Global Sales | Sale | −400 | $386.62 | $155K | Jun 25, 2026 | Form 4 ↗ |
| Hwang Donghyun ThomasSVP, Global Sales | Sale | −9 | $384.35 | $3K | Jun 25, 2026 | Form 4 ↗ |
| Hwang Donghyun ThomasSVP, Global Sales | Sale | −300 | $382.91 | $115K | Jun 25, 2026 | Form 4 ↗ |
| Hwang Donghyun ThomasSVP, Global Sales | Sale | −420 | $382.04 | $160K | Jun 25, 2026 | Form 4 ↗ |
| Hwang Donghyun ThomasSVP, Global Sales | Sale | −100 | $379.80 | $38K | Jun 25, 2026 | Form 4 ↗ |
| Hwang Donghyun ThomasSVP, Global Sales | Sale | −200 | $375.34 | $75K | Jun 25, 2026 | Form 4 ↗ |
Fund Holders
Mutual funds and ETFs holding MTSI · SEC Form N-PORT
| Fund | Shares | Value | % of fund | As of |
|---|---|---|---|---|
| Select Semiconductors Portfolio Fidelity Select Portfolios | 3.8M | $1.39B | 2.70% | May 31, 2026 |
| iShares Core S&P Mid-Cap ETF iShares Trust | 2.2M | $854.1M | 0.69% | Jun 30, 2026 |
| VANGUARD TOTAL STOCK MARKET INDEX FUND VANGUARD INDEX FUNDS | 2.2M | $829.2M | 0.04% | Jun 30, 2026 |
| VANGUARD SMALL-CAP INDEX FUND VANGUARD INDEX FUNDS | 1.6M | $599.0M | 0.32% | Jun 30, 2026 |
| iShares Semiconductor ETF iShares Trust | 1.5M | $561.3M | 1.17% | Jun 30, 2026 |
| T. Rowe Price Mid-Cap Growth Fund, Inc. | 1.2M | $450.9M | 1.96% | Jun 30, 2026 |
| SMALLCAP World Fund Inc | 1.1M | $402.2M | 0.43% | Jun 30, 2026 |
| VANGUARD SMALL-CAP GROWTH INDEX FUND VANGUARD INDEX FUNDS | 907.8K | $345.3M | 0.73% | Jun 30, 2026 |
| VANGUARD EXTENDED MARKET INDEX FUND VANGUARD INDEX FUNDS | 752.3K | $286.1M | 0.29% | Jun 30, 2026 |
| VANGUARD INFORMATION TECHNOLOGY INDEX FUND VANGUARD WORLD FUND | 763.7K | $278.5M | 0.16% | May 31, 2026 |
Mutual funds and ETFs whose N-PORT filings list MTSI's shares (CUSIP 55405Y100), each fund at its latest report since Mar 7, 2026, largest positions first. Bonds, options and short positions are left out.
Activist & Passive Stakes
Schedule 13D / 13G beneficial-ownership filings
- T. Rowe Price Investment Management, Inc.SCHEDULE 13G/A · passive (13G) · 2.9M shares3.7%
Aug 14, 2026 · ↗ - Susan M. OcampoSCHEDULE 13G/A · passive (13G) · 4.9M shares6.4%
Aug 12, 2026 · ↗ - BlackRock, Inc.SCHEDULE 13G/A · passive (13G) · 8.0M shares10.4%
Jul 8, 2026 · ↗ - T. Rowe Price Investment Management, Inc.SCHEDULE 13G/A · passive (13G) · 4.5M shares6.0%
May 15, 2026 · ↗ - Abigail P. JohnsonSCHEDULE 13G/A · passive (13G) · 10.6M shares14.1%
May 6, 2026 · ↗ - FMR LLCSCHEDULE 13G/A · passive (13G) · 10.6M shares14.1%
May 6, 2026 · ↗ - Susan M. OcampoSCHEDULE 13G/A · passive (13G) · 6.8M shares9.1%
May 5, 2026 · ↗
Corporate Lobbying
Estimated quarterly lobbying spending reported under the LDA, filings naming macom technology solutions as client
- AKIN GUMP STRAUSS HAUER & FELDMACOM TECHNOLOGY SOLUTIONS · 2026 Q2—
Filing ↗ - AKIN GUMP STRAUSS HAUER & FELDMACOM TECHNOLOGY SOLUTIONS · 2026 Q1—
Filing ↗ - AKIN GUMP STRAUSS HAUER & FELDMACOM TECHNOLOGY SOLUTIONS · 2025 Q4—
Filing ↗ - AKIN GUMP STRAUSS HAUER & FELDMACOM TECHNOLOGY SOLUTIONS · 2025 Q3—
Filing ↗ - AKIN GUMP STRAUSS HAUER & FELDMACOM TECHNOLOGY SOLUTIONS · 2025 Q2—
Filing ↗
Government Contracts
Federal awards to macom technology solutions · USAspending
$204KAwarded · 2 contracts on record
U.S. Patents
Recent USPTO applications naming MACOM Technology Solutions Holdings, Inc.
No USPTO patent applications found for MACOM Technology Solutions Holdings, Inc..
Annual Financials
From MTSI's 10-K filings · XBRL
No annual XBRL figures on record for MTSI. KeyVex's fundamentals cover about 130 large companies so far.
Stock Splits
Every split and reverse split in the price history
No stock splits in MTSI's price history.
About MACOM Technology Solutions Holdings, Inc.
From SEC EDGAR company records
Industry (SIC 3674)Semiconductors & Related Devices
SectorTechnology
HeadquartersLOWELL, MA
IncorporatedDE
SEC CIK0001493594 ↗
Former namesM/A-COM Technology Solutions Holdings, Inc.