LOWELL, MA
MACOM TECHNOLOGY SOLUTIONS HOLDINGS, INC.MTSI— Latest position per institution from SEC 13F filings
15
Institutional holders
60.10M
Total shares held
10.91B
Estimated value
3.01M
Avg. position size
FMR LLC
CIK 315066
Shares
10.61M
Value
2.36B
Filed
Mar 31, 2026
BLACKROCK, INC.
CIK 2012383
Shares
8.57M
Value
1.90B
Filed
Mar 31, 2026
VANGUARD GROUP INC
CIK 102909
Shares
7.23M
Value
1.24B
Filed
Dec 31, 2025
BLACKROCK FINANCE, INC.
CIK 1364742
Shares
4.98M
Value
554.97M
Filed
Jun 30, 2024
T. ROWE PRICE INVESTMENT MANAGEMENT, INC.
CIK 1897612
Shares
4.49M
Value
996.23K
Filed
Mar 31, 2026
INVESCO LTD.
CIK 914208
Shares
3.67M
Value
815.84M
Filed
Mar 31, 2026
VANGUARD PORTFOLIO MANAGEMENT LLC
CIK 2100121
Shares
3.59M
Value
796.58M
Filed
Mar 31, 2026
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
2.99M
Value
664.62M
Filed
Mar 31, 2026
STATE STREET CORP
CIK 93751
Shares
2.15M
Value
478.06M
Filed
Mar 31, 2026
WELLINGTON MANAGEMENT GROUP LLP
CIK 902219
Shares
1.55M
Value
343.77M
Filed
Mar 31, 2026
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
1.36M
Value
301.98M
Filed
Mar 31, 2026
CAPITAL RESEARCH GLOBAL INVESTORS
CIK 1422848
Shares
1.22M
Value
271.52M
Filed
Mar 31, 2026
WHALE ROCK CAPITAL MANAGEMENT LLC
CIK 1387322
Shares
1.17M
Value
260.93M
Filed
Mar 31, 2026
JPMORGAN CHASE & CO
CIK 19617
Shares
1.11M
Value
189.49M
Filed
Dec 31, 2025
ARTISAN PARTNERS LIMITED PARTNERSHIP
CIK 1466153
Shares
1.05M
Value
232.54M
Filed
Mar 31, 2026
POLAR CAPITAL HOLDINGS PLC
CIK 1837309
Shares
930.78K
Value
206.70M
Filed
Mar 31, 2026
PRICE T ROWE ASSOCIATES INC /MD/
CIK 80255
Shares
914.85K
Value
203.16K
Filed
Mar 31, 2026
MACQUARIE GROUP LTD
CIK 1418333
Shares
859.78K
Value
107.03M
Filed
Sep 30, 2025
GW&K INVESTMENT MANAGEMENT, LLC
CIK 1082917
Shares
839.06K
Value
186.33K
Filed
Mar 31, 2026
MASSACHUSETTS FINANCIAL SERVICES CO /MA/
CIK 912938
Shares
828.45K
Value
183.97M
Filed
Mar 31, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | FMR LLC | 315066 | 10.61M | 2.36B | Mar 31, 2026 |
| 2 | BLACKROCK, INC. | 2012383 | 8.57M | 1.90B | Mar 31, 2026 |
| 3 | VANGUARD GROUP INC | 102909 | 7.23M | 1.24B | Dec 31, 2025 |
| 4 | BLACKROCK FINANCE, INC. | 1364742 | 4.98M | 554.97M | Jun 30, 2024 |
| 5 | T. ROWE PRICE INVESTMENT MANAGEMENT, INC. | 1897612 | 4.49M | 996.23K | Mar 31, 2026 |
| 6 | INVESCO LTD. | 914208 | 3.67M | 815.84M | Mar 31, 2026 |
| 7 | VANGUARD PORTFOLIO MANAGEMENT LLC | 2100121 | 3.59M | 796.58M | Mar 31, 2026 |
| 8 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 2.99M | 664.62M | Mar 31, 2026 |
| 9 | STATE STREET CORP | 93751 | 2.15M | 478.06M | Mar 31, 2026 |
| 10 | WELLINGTON MANAGEMENT GROUP LLP | 902219 | 1.55M | 343.77M | Mar 31, 2026 |
| 11 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 1.36M | 301.98M | Mar 31, 2026 |
| 12 | CAPITAL RESEARCH GLOBAL INVESTORS | 1422848 | 1.22M | 271.52M | Mar 31, 2026 |
| 13 | WHALE ROCK CAPITAL MANAGEMENT LLC | 1387322 | 1.17M | 260.93M | Mar 31, 2026 |
| 14 | JPMORGAN CHASE & CO | 19617 | 1.11M | 189.49M | Dec 31, 2025 |
| 15 | ARTISAN PARTNERS LIMITED PARTNERSHIP | 1466153 | 1.05M | 232.54M | Mar 31, 2026 |
| 16 | POLAR CAPITAL HOLDINGS PLC | 1837309 | 930.78K | 206.70M | Mar 31, 2026 |
| 17 | PRICE T ROWE ASSOCIATES INC /MD/ | 80255 | 914.85K | 203.16K | Mar 31, 2026 |
| 18 | MACQUARIE GROUP LTD | 1418333 | 859.78K | 107.03M | Sep 30, 2025 |
| 19 | GW&K INVESTMENT MANAGEMENT, LLC | 1082917 | 839.06K | 186.33K | Mar 31, 2026 |
| 20 | MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | 912938 | 828.45K | 183.97M | Mar 31, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.