BlackRock
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BlackRock’s PTC Therapeutics PTCT Stock Holding History

BlackRock’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
Q1 		$882M Buy
12,948,717
+169,652
+1% +$12M 0.02% 752
2025
Q4 		$971M Buy
12,779,065
+5,648,258
+79% +$410M 0.02% 700
2025
Q3 		$438M Sell
7,130,807
-349,625
-5% -$18.2M 0.01% 1179
2025
Q2 		$365M Sell
7,480,432
-287,785
-4% -$13.7M 0.01% 1245
2025
Q1 		$396M Sell
7,768,217
-130,584
-2% -$6.52M 0.01% 1185
2024
Q4 		$357M Sell
7,898,801
-84,412
-1% -$3.61M 0.01% 1310
2024
Q3 		$296M Buy
7,983,213
+211,073
+3% +$7.07M 0.01% 1432
2024
Q2 		$238M Buy
7,772,140
+207,054
+3% +$6.71M 0.01% 1509
2024
Q1 		$220M Sell
7,565,086
-69,036
-0.9% -$1.93M 0.01% 1583
2023
Q4 		$210M Buy
7,634,122
+699,673
+10% +$16M 0.01% 1619
2023
Q3 		$155M Buy
6,934,449
+68,106
+1% +$2.53M ﹤0.01% 1712
2023
Q2 		$279M Buy
6,866,343
+596,353
+10% +$29.2M 0.01% 1343
2023
Q1 		$304M Sell
6,269,990
-315,572
-5% -$14.4M 0.01% 1254
2022
Q4 		$251M Buy
6,585,562
+477,145
+8% +$19.8M 0.01% 1365
2022
Q3 		$307M Buy
6,108,417
+135,795
+2% +$6.65M 0.01% 1156
2022
Q2 		$239M Sell
5,972,622
-272,795
-4% -$9.57M 0.01% 1390
2022
Q1 		$233M Sell
6,245,417
-144,524
-2% -$5.57M 0.01% 1557
2021
Q4 		$255M Sell
6,389,941
-112,792
-2% -$4.32M 0.01% 1561
2021
Q3 		$242M Sell
6,502,733
-16,634
-0.3% -$683K 0.01% 1566
2021
Q2 		$276M Buy
6,519,367
+309,160
+5% +$13.2M 0.01% 1535
2021
Q1 		$294M Buy
6,210,207
+182,088
+3% +$10.8M 0.01% 1434
2020
Q4 		$368M Buy
6,028,119
+285,694
+5% +$16.8M 0.01% 1129
2020
Q3 		$268M Buy
5,742,425
+73,730
+1% +$3.63M 0.01% 1150
2020
Q2 		$288M Buy
5,668,695
+540,781
+11% +$26.6M 0.01% 1087
2020
Q1 		$229M Buy
5,127,914
+213,321
+4% +$10.7M 0.01% 1061
2019
Q4 		$236M Buy
4,914,593
+208,497
+4% +$8.86M 0.01% 1355
2019
Q3 		$159M Buy
4,706,096
+203,425
+5% +$8.85M 0.01% 1580
2019
Q2 		$203M Buy
4,502,671
+394,773
+10% +$15.6M 0.01% 1430
2019
Q1 		$155M Buy
4,107,898
+400,657
+11% +$13.5M 0.01% 1599
2018
Q4 		$127M Buy
3,707,241
+67,532
+2% +$2.43M 0.01% 1638
2018
Q3 		$171M Buy
3,639,709
+187,548
+5% +$7.76M 0.01% 1591
2018
Q2 		$116M Buy
3,452,161
+170,451
+5% +$5.32M 0.01% 1845
2018
Q1 		$88.8M Buy
3,281,710
+188,311
+6% +$4.77M ﹤0.01% 1925
2017
Q4 		$51.6M Sell
3,093,399
-49,377
-2% -$836K ﹤0.01% 2272
2017
Q3 		$62.9M Buy
3,142,776
+6,832
+0.2% +$134K ﹤0.01% 2141
2017
Q2 		$57.5M Sell
3,135,944
-124,314
-4% -$1.67M ﹤0.01% 2151
2017
Q1 		$32.1M Buy
3,260,258
+3,209,245
+6,291% +$38.8M ﹤0.01% 2476
2016
Q4 		$557K Sell
51,013
-7,226
-12% -$75.8K ﹤0.01% 1676
2016
Q3 		$816K Buy
58,239
+433
+0.7% +$3.52K ﹤0.01% 1566
2016
Q2 		$406K Buy
57,806
+8,981
+18% +$65.9K ﹤0.01% 1752
2016
Q1 		$315K Buy
48,825
+47,818
+4,749% +$830K ﹤0.01% 1644
2015
Q4 		$33K Sell
1,007
-21,368
-95% -$629K ﹤0.01% 2292
2015
Q3 		$597K Buy
22,375
+312
+1% +$13.3K ﹤0.01% 1454
2015
Q2 		$1.06M Buy
22,063
+21,398
+3,218% +$1.25M ﹤0.01% 1332
2015
Q1 		$40K Sell
665
-98
-13% -$5.98K ﹤0.01% 2045
2014
Q4 		$39K Buy
763
+241
+46% +$10.6K ﹤0.01% 2072
2014
Q3 		$23K Hold
522
– – ﹤0.01% 2260
2014
Q2 		$14K Buy
522
+222
+74% +$4.75K ﹤0.01% 2571
2014
Q1 		$8K Hold
300
– – ﹤0.01% 2862
2013
Q4 		$5K Buy
300
+100
+50% +$1.76K ﹤0.01% 3048
2013
Q3 		$4K Buy
+200
New +$3.48K ﹤0.01% 3040

Other funds holding PTCT

RI
RTW Investments New York $10B AUM 135.35% 1-Year Est. Return
Janus Henderson Group
Janus Henderson Group London, United Kingdom $209B AUM 37.72% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Toronto Dominion Bank
Toronto Dominion Bank Toronto, Ontario, Ontario, Canada $69.7B AUM 40.86% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
AC
Armistice Capital New York $5.62B AUM 36.06% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return

BlackRock's PTCT Position: Q1 2026 in Review

BlackRock increased its PTC Therapeutics (PTCT) stake by 1.3% in Q1 2026, buying an estimated $12M and bringing the position to 12,948,717 shares worth $882M. The position accounts for 0.02% of the portfolio, ranked #752.

BlackRock first reported a position in PTCT in Q3 2013 and has held it in 51 quarters since. The position peaked at $971M in Q4 2025. 350 funds tracked by Wall St. Rank hold PTCT as of Q1 2026.

  • BlackRock held 12,948,717 shares of PTC Therapeutics worth $882M as of Q1 2026.
  • BlackRock bought 169,652 PTC Therapeutics shares in Q1 2026, an estimated $12M.
  • PTC Therapeutics made up 0.02% of BlackRock's portfolio in Q1 2026, its #752 holding.
  • BlackRock first reported a position in PTC Therapeutics in Q3 2013 and has held it in 51 quarters since.
  • BlackRock's PTC Therapeutics position peaked at $971M in Q4 2025.
  • 350 funds tracked by Wall St. Rank held PTC Therapeutics as of Q1 2026.

Based on BlackRock's 13F filing for Q1 2026, filed 13 May 2026.