Westfield Capital Management
PTCT icon

Westfield Capital Management’s PTC Therapeutics PTCT Stock Holding History

Westfield Capital Management’s Portfolio PTCT Stock Details PTCT Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$160M Buy
+1,956,156
New +$141M 0.52% 50
2025
Q2 		– Sell
-5,076
Closed -$259K – 267
2025
Q1 		$259K Buy
+5,076
New +$253K ﹤0.01% 243
2016
Q1 		– Sell
-1,872,220
Closed -$60.7M – 283
2015
Q4 		$60.7M Buy
1,872,220
+621,079
+50% +$18.3M 0.41% 81
2015
Q3 		$33.4M Sell
1,251,141
-1,215,619
-49% -$52M 0.24% 123
2015
Q2 		$119M Buy
2,466,760
+122,419
+5% +$7.14M 0.72% 38
2015
Q1 		$143M Buy
2,344,341
+1,613,031
+221% +$98.4M 0.82% 30
2014
Q4 		$37.9M Buy
731,310
+10,330
+1% +$455K 0.22% 135
2014
Q3 		$31.7M Sell
720,980
-8,270
-1% -$259K 0.19% 153
2014
Q2 		$19.1M Buy
729,250
+238,110
+48% +$5.1M 0.11% 206
2014
Q1 		$12.8M Buy
+491,140
New +$13.2M 0.08% 226

Other funds holding PTCT

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
RI
RTW Investments New York $11.7B AUM 174.13% 1-Year Est. Return
JT
Jupiter Topco New York $245B AUM
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Toronto Dominion Bank
Toronto Dominion Bank Toronto, Ontario, Ontario, Canada $86.4B AUM 59.51% 1-Year Est. Return
HRCM
Hood River Capital Management Palm Beach Gardens, Florida $13.8B AUM 163.97% 1-Year Est. Return

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

Westfield Capital Management opened a new position in PTC Therapeutics (PTCT) in Q2 2026: 1,956,156 shares worth $160M. The stake represents 0.52% of the portfolio and ranks #50 among its holdings. This is a return to the name: Westfield Capital Management previously reported a position in PTCT as recently as Q1 2025.

Westfield Capital Management first reported a position in PTCT in Q1 2014 and has held it in 10 quarters since. 383 funds tracked by Wall St. Rank hold PTCT as of Q2 2026.

  • Westfield Capital Management held 1,956,156 shares of PTC Therapeutics worth $160M as of Q2 2026.
  • PTC Therapeutics was a new Westfield Capital Management position in Q2 2026.
  • PTC Therapeutics made up 0.52% of Westfield Capital Management's portfolio in Q2 2026, its #50 holding.
  • Westfield Capital Management first reported a position in PTC Therapeutics in Q1 2014 and has held it in 10 quarters since.
  • 383 funds tracked by Wall St. Rank held PTC Therapeutics as of Q2 2026.

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