13FPulse
PT

PTCT PTC THERAPEUTICS INC

2026Q2 · CUSIP 69366J200 · Sector: Healthcare & Biotech

Piling in

Net holder growth ranks near the top of the market

Funds that own it
374
Institutions that reported holding it to the SEC
Net increase in holders
+24
Last quarter 350 → now 374
How unusual is that
Top 20%
Stronger buying than 86% of US stocks
What the filings say, in one paragraph

374 funds held PTCT at the end of 2026Q2, up 24 from the quarter before. That is stronger buying than 86.1% of US stocks — among the most piled-into names this quarter. On the business itself, revenue over the last 12 months was $827M(YoY -53.3%). PTCT has had 17 buying rushes in its history, and the price moved +18.3% on average over the six months after (that is the raw price move, not how much it beat the market by). It sits in the Healthcare & Biotech sector.

How many funds owned it, quarter by quarter

Bars = net change in institutional holders, positive (green) or negative (red). Line = total institutional holders.

2013Q3: holders=61 2013Q4: holders=59 2014Q1: holders=65 2014Q2: holders=81 2014Q3: holders=98 2014Q4: holders=132 2015Q1: holders=154 2015Q2: holders=152 2015Q3: holders=156 2015Q4: holders=139 2016Q1: holders=116 2016Q2: holders=117 2016Q3: holders=114 2016Q4: holders=121 2017Q1: holders=115 2017Q2: holders=114 2017Q3: holders=129 2017Q4: holders=124 2018Q1: holders=148 2018Q2: holders=166 2018Q3: holders=180 2018Q4: holders=164 2019Q1: holders=173 2019Q2: holders=173 2019Q3: holders=182 2019Q4: holders=205 2020Q1: holders=200 2020Q2: holders=202 2020Q3: holders=196 2020Q4: holders=215 2021Q1: holders=208 2021Q2: holders=182 2021Q3: holders=183 2021Q4: holders=178 2022Q1: holders=184 2022Q2: holders=181 2022Q3: holders=211 2022Q4: holders=205 2023Q1: holders=202 2023Q2: holders=206 2023Q3: holders=180 2023Q4: holders=173 2024Q1: holders=183 2024Q2: holders=199 2024Q3: holders=203 2024Q4: holders=242 2025Q1: holders=261 2025Q2: holders=284 2025Q3: holders=297 2025Q4: holders=351 2026Q1: holders=350 2026Q2: holders=374 -58 -29 +0 +29 +58 53223393 13Q315Q116Q318Q119Q321Q122Q324Q125Q326Q2 Net change in holders (bars) Total funds holding (line)

What happened after each past buying rush 17 times in its history

Quarter of the rush How unusual then Price, next 3 months Price, next 6 months
2026Q2 Top 20%
2025Q4 Top 10% -0.5% +1.6%
2025Q2 Top 20% +26.5% +51.2%
2025Q1 Top 20% +2.2% +5.6%
2024Q4 Top 20% -6.7% -11.2%
2024Q2 Top 20% +9.0% +26.8%
2022Q3 Top 5% +5.6% +24.8%
2019Q4 Top 20% -22.8% -15.4%

These are the raw price moves, not how much it beat the market by. Compare them against the market over the same months — in a strong bull market almost everything is up.

Show all the numbers (large funds, value held, options…) ▾
Of them, large funds
189
Change in large funds
+26
Total value they hold
$8.0B
Funds buying for the first time
76
Funds that sold out entirely
52
Price change that quarter
+0.6%
Funds holding puts (bearish)
4
Funds holding calls (bullish)
6

These are for people who want to dig. Skip them if they do not mean anything to you — the three numbers above are enough.

8,697 institutions have filed for this quarter. 13F permits late filing and a small number arrive in the weeks after the deadline, so the holder counts and changes below may tick up.

Fundamentals

PE (TTM)
EPS (TTM)
$-2.29
EPS YoY
-135.2%
Revenue (TTM)
$0.8B
Revenue YoY
-53.3%
Net margin
-22.6%
ROE
Debt ratio
106.3%
FCF (TTM)
-$226M
Dividend (TTM)
No dividend
Quarterly Revenue & EPS
2022-06-30: EPS -2.13 2022-09-30: EPS -1.53 2022-12-31: EPS -2.35 2023-03-31: EPS -1.88 2023-06-30: EPS -2.66 2023-09-30: EPS -1.76 2023-12-31: EPS -2.07 2024-03-31: EPS -1.20 2024-06-30: EPS -1.29 2024-09-30: EPS -1.39 2024-12-31: EPS -0.85 2025-03-31: EPS 10.04 2025-06-30: EPS -0.83 2025-09-30: EPS 0.20 2025-12-31: EPS -1.63 2026-03-31: EPS -0.03 0B 0.6B 1.2B $B -2.93 4.06 11.04 20162017201820192020202120222023202420252026 Revenue EPS

Quarterly figures, revenue up to 10 years back; EPS split-adjusted, early quarters hidden when not calibrable

P/E (TTM) over time
6 8 9 20252026

P/E = close around day 47 after quarter-end ÷ TTM EPS then; this is a consistent valuation date, not the company’s actual filing date; loss quarters hidden

Quarterly free cash flow
-175M347M868M 20162017201820192020202120222023202420252026
Latest quarter $-60M (2026-03-31)

FCF = operating cash flow − capex, computed from SEC XBRL; banks/insurers have no standard cash-flow structure and are hidden

As of 2026-03-31 · SEC filings (XBRL)

Email me the next update

2026 Q3 holdings are due 2026-11-16. We will email you when the refreshed lists are live.