Westfield Capital Management
MTSI icon

Westfield Capital Management’s MACOM Technology Solutions MTSI Stock Holding History

Westfield Capital Management’s Portfolio MTSI Stock Details MTSI Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$66.9M Buy
175,952
+43,495
+33% +$14.4M 0.22% 129
2026
Q1 		$29.4M Sell
132,457
-98,636
-43% -$22M 0.12% 169
2025
Q4 		$39.6M Sell
231,093
-205,403
-47% -$32.6M 0.16% 161
2025
Q3 		$54.3M Sell
436,496
-272,937
-38% -$36M 0.23% 137
2025
Q2 		$102M Sell
709,433
-12,471
-2% -$1.46M 0.43% 65
2025
Q1 		$72.5M Sell
721,904
-268,775
-27% -$32.7M 0.35% 84
2024
Q4 		$129M Sell
990,679
-219,868
-18% -$27.7M 0.56% 49
2024
Q3 		$135M Buy
1,210,547
+210,151
+21% +$22M 0.61% 40
2024
Q2 		$112M Buy
1,000,396
+559,126
+127% +$57M 0.55% 52
2024
Q1 		$42.2M Sell
441,270
-18,782
-4% -$1.66M 0.22% 156
2023
Q4 		$42.8M Buy
+460,052
New +$37.8M 0.25% 148
2023
Q3 		– Sell
-391,368
Closed -$25.6M – 244
2023
Q2 		$25.6M Buy
391,368
+90,029
+30% +$5.45M 0.16% 160
2023
Q1 		$21.3M Buy
+301,339
New +$20.4M 0.15% 163
2022
Q4 		– Sell
-328,310
Closed -$17M – 248
2022
Q3 		$17M Buy
+328,310
New +$18M 0.14% 172
2017
Q2 		– Sell
-27,010
Closed -$1.3M – 272
2017
Q1 		$1.3M Buy
+27,010
New +$1.26M 0.01% 241

Other funds holding MTSI

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return

Westfield Capital Management's MTSI Position: Q2 2026 in Review

Westfield Capital Management increased its MACOM Technology Solutions (MTSI) stake by 33% in Q2 2026, buying an estimated $14.4M and bringing the position to 175,952 shares worth $66.9M. The position accounts for 0.22% of the portfolio, ranked #129.

Westfield Capital Management first reported a position in MTSI in Q1 2017 and has held it in 15 quarters since. The position peaked at $135M in Q3 2024. 656 funds tracked by Wall St. Rank hold MTSI as of Q2 2026.

  • Westfield Capital Management held 175,952 shares of MACOM Technology Solutions worth $66.9M as of Q2 2026.
  • Westfield Capital Management bought 43,495 MACOM Technology Solutions shares in Q2 2026, an estimated $14.4M.
  • MACOM Technology Solutions made up 0.22% of Westfield Capital Management's portfolio in Q2 2026, its #129 holding.
  • Westfield Capital Management first reported a position in MACOM Technology Solutions in Q1 2017 and has held it in 15 quarters since.
  • Westfield Capital Management's MACOM Technology Solutions position peaked at $135M in Q3 2024.
  • 656 funds tracked by Wall St. Rank held MACOM Technology Solutions as of Q2 2026.

Based on Westfield Capital Management's 13F filing for Q2 2026, filed 12 Aug 2026.