FMR LLC
Rank #1
13.9%
- Shares
- 10.61M
- Change
- +4.13M
- Change %
- +63.73%
- Filing
- Mar 31, 2026
Increased
Methodology published · Market data, model notes, and corrections process are public · Data policy · Corrections policy
NASDAQ · TECHNOLOGY · Holders
MACOM Technology Solutions Holdings Inc (MTSI) Institutional Ownership & Insider Trading History
Top MTSI institutional shareholders, filing changes, and Form 4 insider activity with filters for buys, sales, option exercises, gifts, and tax withholding.
Ownership read
MTSI insider sentiment: Net selling.
FMR LLC is the largest loaded institutional holder. 109 sale rows and 0 purchase rows are visible in the loaded Form 4 history. Use the filters below to separate real buying and selling from option exercises, gifts, awards, and tax withholding.
Insider flow
MTSI
Purchases—
Sales1.21M
Directional bars ignore awards, gifts, conversions, and tax withholding rows.
Top holder
10.61M
FMR LLC
Insider stance
Net selling
$250.32M sold / — bought
Latest filing
May 29, 2026
Most recent holder or insider filing date
Rows loaded
240
120 holder / 120 insider
- Holder rows
- 120
- Market data feed
- Latest filing
- May 29, 2026
- Most recent holder or insider filing date
- Increased / initiated
- 58
- 60 decreased in loaded rows
- Insider rows
- 120
- Market data feed
Top 120 institutional holders
MACOM Technology Solutions Holdings Inc (MTSI) institutional ownership
Ranked by reported share count, with position changes and latest filing dates where the ownership feed supplies them.
BLACKROCK
Rank #2
11.3%
- Shares
- 8.57M
- Change
- +1.04M
- Change %
- +13.84%
- Filing
- Mar 31, 2026
Increased
VANGUARD GROUP INC
Rank #3
9.49%
- Shares
- 7.23M
- Change
- +157.34K
- Change %
- +2.23%
- Filing
- Dec 31, 2025
Increased
T. ROWE PRICE INVESTMENT MANAGEMENT
Rank #4
5.89%
- Shares
- 4.49M
- Change
- -913.95K
- Change %
- -16.93%
- Filing
- Mar 31, 2026
Decreased
INVESCO LTD.
Rank #5
4.83%
- Shares
- 3.67M
- Change
- +249.25K
- Change %
- +7.28%
- Filing
- Mar 31, 2026
Increased
VANGUARD PORTFOLIO MANAGEMENT LLC
Rank #6
4.71%
- Shares
- 3.59M
- Change
- +3.59M
- Change %
- —
- Filing
- Mar 31, 2026
Initiated
VANGUARD CAPITAL MANAGEMENT LLC
Rank #7
3.93%
- Shares
- 2.99M
- Change
- +2.99M
- Change %
- —
- Filing
- Mar 31, 2026
Initiated
STATE STREET CORP
Rank #8
2.83%
- Shares
- 2.15M
- Change
- +34.08K
- Change %
- +1.61%
- Filing
- Mar 31, 2026
Increased
JPMORGAN CHASE & CO
Rank #9
2.65%
- Shares
- 2.02M
- Change
- +909.29K
- Change %
- +82.19%
- Filing
- Mar 31, 2026
Increased
WELLINGTON MANAGEMENT GROUP LLP
Rank #10
2.03%
- Shares
- 1.55M
- Change
- +532.47K
- Change %
- +52.43%
- Filing
- Mar 31, 2026
Increased
GEODE CAPITAL MANAGEMENT
Rank #11
1.79%
- Shares
- 1.36M
- Change
- +92.43K
- Change %
- +7.29%
- Filing
- Mar 31, 2026
Increased
CAPITAL RESEARCH GLOBAL INVESTORS
Rank #12
1.61%
- Shares
- 1.22M
- Change
- -114.04K
- Change %
- -8.53%
- Filing
- Mar 31, 2026
Decreased
WHALE ROCK CAPITAL MANAGEMENT LLC
Rank #13
1.54%
- Shares
- 1.17M
- Change
- +391.69K
- Change %
- +50.00%
- Filing
- Mar 31, 2026
Increased
ARTISAN PARTNERS LIMITED PARTNERSHIP
Rank #14
1.38%
- Shares
- 1.05M
- Change
- -199.56K
- Change %
- -16.01%
- Filing
- Mar 31, 2026
Decreased
POLAR CAPITAL HOLDINGS PLC
Rank #15
1.22%
- Shares
- 930.78K
- Change
- +930.78K
- Change %
- —
- Filing
- Mar 31, 2026
Initiated
PRICE T ROWE ASSOCIATES INC
Rank #16
1.20%
- Shares
- 914.85K
- Change
- -1.02M
- Change %
- -52.71%
- Filing
- Mar 31, 2026
Decreased
GW&K INVESTMENT MANAGEMENT
Rank #17
1.10%
- Shares
- 839.06K
- Change
- -378.87K
- Change %
- -31.11%
- Filing
- Mar 31, 2026
Decreased
MASSACHUSETTS FINANCIAL SERVICES CO
Rank #18
1.09%
- Shares
- 828.45K
- Change
- +360.65K
- Change %
- +77.10%
- Filing
- Mar 31, 2026
Increased
UBS GROUP AG
Rank #19
1.06%
- Shares
- 809.41K
- Change
- -100.39K
- Change %
- -11.03%
- Filing
- Mar 31, 2026
Decreased
ALLIANCEBERNSTEIN L.P.
Rank #20
1.04%
- Shares
- 789.04K
- Change
- -274.33K
- Change %
- -25.80%
- Filing
- Mar 31, 2026
Decreased
| # | Institution | % held | Shares | Change | Change % | Filing date |
|---|---|---|---|---|---|---|
| 1 | 13.9% | 10.61M | +4.13M Increased | +63.73% | Mar 31, 2026 | |
| 2 | 11.3% | 8.57M | +1.04M Increased | +13.84% | Mar 31, 2026 | |
| 3 | 9.49% | 7.23M | +157.34K Increased | +2.23% | Dec 31, 2025 | |
| 4 | 5.89% | 4.49M | -913.95K Decreased | -16.93% | Mar 31, 2026 | |
| 5 | 4.83% | 3.67M | +249.25K Increased | +7.28% | Mar 31, 2026 | |
| 6 | 4.71% | 3.59M | +3.59M Initiated | — | Mar 31, 2026 | |
| 7 | 3.93% | 2.99M | +2.99M Initiated | — | Mar 31, 2026 | |
| 8 | 2.83% | 2.15M | +34.08K Increased | +1.61% | Mar 31, 2026 | |
| 9 | 2.65% | 2.02M | +909.29K Increased | +82.19% | Mar 31, 2026 | |
| 10 | 2.03% | 1.55M | +532.47K Increased | +52.43% | Mar 31, 2026 | |
| 11 | 1.79% | 1.36M | +92.43K Increased | +7.29% | Mar 31, 2026 | |
| 12 | 1.61% | 1.22M | -114.04K Decreased | -8.53% | Mar 31, 2026 | |
| 13 | WHALE ROCK CAPITAL MANAGEMENT LLC | 1.54% | 1.17M | +391.69K Increased | +50.00% | Mar 31, 2026 |
| 14 | ARTISAN PARTNERS LIMITED PARTNERSHIP | 1.38% | 1.05M | -199.56K Decreased | -16.01% | Mar 31, 2026 |
| 15 | POLAR CAPITAL HOLDINGS PLC | 1.22% | 930.78K | +930.78K Initiated | — | Mar 31, 2026 |
| 16 | 1.20% | 914.85K | -1.02M Decreased | -52.71% | Mar 31, 2026 | |
| 17 | GW&K INVESTMENT MANAGEMENT | 1.10% | 839.06K | -378.87K Decreased | -31.11% | Mar 31, 2026 |
| 18 | MASSACHUSETTS FINANCIAL SERVICES CO | 1.09% | 828.45K | +360.65K Increased | +77.10% | Mar 31, 2026 |
| 19 | 1.06% | 809.41K | -100.39K Decreased | -11.03% | Mar 31, 2026 | |
| 20 | 1.04% | 789.04K | -274.33K Decreased | -25.80% | Mar 31, 2026 |
Showing 20 of 120 matching institutional rows.Load more institutions
Recent insider transactions
MACOM Technology Solutions Holdings Inc (MTSI) Form 4 filings
Action codes are translated so open-market buys and sales are separate from awards, gifts, conversions, and tax withholding.
DALY, STEPHEN G
Director, President and CEO
- Shares
- 2.43K
- % company
- <0.01%
- Price
- $362.94
- Value
- $881,581
Filed May 29, 2026
DALY, STEPHEN G
Director, President and CEO
- Shares
- 400
- % company
- <0.01%
- Price
- $391.07
- Value
- $156,428
Filed May 29, 2026
DALY, STEPHEN G
Director, President and CEO
- Shares
- 904
- % company
- <0.01%
- Price
- $362.02
- Value
- $327,266
Filed May 29, 2026
DALY, STEPHEN G
Director, President and CEO
- Shares
- 2.08K
- % company
- <0.01%
- Price
- $363.87
- Value
- $755,030
Filed May 29, 2026
DALY, STEPHEN G
Director, President and CEO
- Shares
- 149
- % company
- <0.01%
- Price
- $389.40
- Value
- $58,021
Filed May 29, 2026
DALY, STEPHEN G
Director, President and CEO
- Shares
- 1.50K
- % company
- <0.01%
- Price
- $358.44
- Value
- $537,660
Filed May 29, 2026
DALY, STEPHEN G
Director, President and CEO
- Shares
- 551
- % company
- <0.01%
- Price
- $388.38
- Value
- $213,997
Filed May 29, 2026
DALY, STEPHEN G
Director, President and CEO
- Shares
- 100
- % company
- <0.01%
- Price
- $386.46
- Value
- $38,646
Filed May 29, 2026
DALY, STEPHEN G
Director, President and CEO
- Shares
- 100
- % company
- <0.01%
- Price
- $382.60
- Value
- $38,260
Filed May 29, 2026
DALY, STEPHEN G
Director, President and CEO
- Shares
- 100
- % company
- <0.01%
- Price
- $380.98
- Value
- $38,098
Filed May 29, 2026
DALY, STEPHEN G
Director, President and CEO
- Shares
- 400
- % company
- <0.01%
- Price
- $378.86
- Value
- $151,544
Filed May 29, 2026
DALY, STEPHEN G
Director, President and CEO
- Shares
- 200
- % company
- <0.01%
- Price
- $375.10
- Value
- $75,020
Filed May 29, 2026
| # | Insider | % company | Action | Shares | Price | Value | Filing date |
|---|---|---|---|---|---|---|---|
| 1 | DALY, STEPHEN G Director, President and CEO | <0.01% | Sale to issuer | 2.43K | $362.94 | $881,581 | May 29, 2026 |
| 2 | DALY, STEPHEN G Director, President and CEO | <0.01% | Sale to issuer | 400 | $391.07 | $156,428 | May 29, 2026 |
| 3 | DALY, STEPHEN G Director, President and CEO | <0.01% | Sale to issuer | 904 | $362.02 | $327,266 | May 29, 2026 |
| 4 | DALY, STEPHEN G Director, President and CEO | <0.01% | Sale to issuer | 2.08K | $363.87 | $755,030 | May 29, 2026 |
| 5 | DALY, STEPHEN G Director, President and CEO | <0.01% | Sale to issuer | 149 | $389.40 | $58,021 | May 29, 2026 |
| 6 | DALY, STEPHEN G Director, President and CEO | <0.01% | Sale to issuer | 1.50K | $358.44 | $537,660 | May 29, 2026 |
| 7 | DALY, STEPHEN G Director, President and CEO | <0.01% | Sale to issuer | 551 | $388.38 | $213,997 | May 29, 2026 |
| 8 | DALY, STEPHEN G Director, President and CEO | <0.01% | Sale to issuer | 100 | $386.46 | $38,646 | May 29, 2026 |
| 9 | DALY, STEPHEN G Director, President and CEO | <0.01% | Sale to issuer | 100 | $382.60 | $38,260 | May 29, 2026 |
| 10 | DALY, STEPHEN G Director, President and CEO | <0.01% | Sale to issuer | 100 | $380.98 | $38,098 | May 29, 2026 |
| 11 | DALY, STEPHEN G Director, President and CEO | <0.01% | Sale to issuer | 400 | $378.86 | $151,544 | May 29, 2026 |
| 12 | DALY, STEPHEN G Director, President and CEO | <0.01% | Sale to issuer | 200 | $375.10 | $75,020 | May 29, 2026 |
Showing 12 of 120 matching Form 4 rows. Percent of company uses current shares outstanding when available.Load more insiders
Frequently asked
Common questions.
Who are the largest MTSI shareholders?
FMR LLC is the largest institutional holder in the loaded MTSI ownership feed, with 10.61 million shares, or about 13.94% of shares outstanding. The table ranks additional institutions by reported share count.
What is institutional ownership of MTSI?
The current TECHi snapshot has 120 loaded institutional rows for MACOM Technology Solutions Holdings Inc. 58 rows are marked increased or initiated, while 60 rows are marked decreased, with the latest holder filing dated Mar 31, 2026.
Where can I see MACOM Technology Solutions Holdings Inc insider transactions?
The insider transaction table currently shows 120 loaded Form 4 rows for MTSI, with the latest insider filing dated May 29, 2026. It separates purchases, sales, option exercises, awards, gifts, and tax withholding so administrative transactions are not confused with open-market trades.
Are MTSI insiders buying or selling?
The loaded MTSI Form 4 rows currently read Net selling: 109 sale rows and 0 purchase rows. Awards, gifts, conversions, and tax withholding are shown separately because they do not carry the same signal as open-market buying or selling.
Who is the most active MTSI insider in the loaded filings?
OCAMPO, SUSAN is the most active insider by absolute share movement in the loaded MTSI rows, with 1.09 million shares moving across the visible filing history. Review the action labels before treating that activity as buying or selling.