PTC THERAPEUTICS INC (PTCT) Stock Institutional Trading Activity


PTC THERAPEUTICS INC (PTCT) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q4 2025), investors with some of the largest reported share count changes include Renaissance Technologies LLC. Explore insights into buying and selling patterns, position changes, and investment conviction levels to understand institutional trading behavior and market dynamics.

Explore more:

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q4 2025Renaissance Technologies LLCSell-319,711607,589$46,152,460
Q3 2025Renaissance Technologies LLCSell-36,000927,300$56,908,401
Q2 2025Renaissance Technologies LLCBuy293,100963,300$47,047,572
Q1 2025Renaissance Technologies LLCBuy17,100670,200$34,153,392
Q4 2024Renaissance Technologies LLCBuy114,900653,100$29,480,934
Q3 2024Renaissance Technologies LLCSell-279,900538,200$19,967,220
Q2 2024Renaissance Technologies LLCBuy56,700818,100$25,017,498
Q1 2024Renaissance Technologies LLCBuy138,500761,400$22,149
Q4 2023Renaissance Technologies LLCBuy388,300622,900$17,167
Q3 2023Renaissance Technologies LLCBuy229,000234,600$5,257
Q3 2022Renaissance Technologies LLCSell-16,4005,600$281
Q4 2021Renaissance Technologies LLCSell-59,60022,000$876
Q3 2021Renaissance Technologies LLCSell-123,41081,600$3,036
Q2 2021Renaissance Technologies LLCBuy13,810205,010$8,666
Q1 2021Renaissance Technologies LLCBuy186,000191,200$9,053
Q2 2020Renaissance Technologies LLCSell-374,2005,200$264
Q1 2020Renaissance Technologies LLCBuy65,500379,400$16,925
Q4 2019Renaissance Technologies LLCBuy183,600313,900$15,077
Q3 2019Renaissance Technologies LLCSell-238,760130,300$4,407
Q2 2019Renaissance Technologies LLCSell-538,240369,060$16,608
Q1 2019Renaissance Technologies LLCSell-115,400907,300$34,151
Q4 2018Renaissance Technologies LLCBuy740,1001,022,700$35,099
Q3 2018Renaissance Technologies LLCBuy63,400282,600$13,282
Q1 2018Renaissance Technologies LLCSell-7,400219,200$5,932
Q4 2017Renaissance Technologies LLCSell-326,100226,600$3,780
Q3 2016Renaissance Technologies LLCBuy450,800552,700$7,743
Q2 2016Renaissance Technologies LLCSell-846,800101,900$715
Q1 2016Renaissance Technologies LLCBuy882,800948,700$6,110
Q3 2015Renaissance Technologies LLCBuy44,30065,900$1,760
Q2 2014Renaissance Technologies LLCBuy21,60021,600$565

Frequently asked questions about PTCT activity

  • Which institutional owners are buying PTCT?

    Institutional owners buying PTCT include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in PTCT activity?

    "Buy" means an investor increased their reported position in PTCT compared to the prior reporting period. This reflects growing exposure to PTC THERAPEUTICS INC (PTCT) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in PTCT increasing?

    Institutional interest in PTCT can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.