PTC 治療公司
US ˙ NasdaqGS ˙ US69366J2006

SecurityPTCT / PTC Therapeutics, Inc.
InstitutionVanguard Group Inc
Latest Disclosed Ownership0 shares
Ownership 0.00%
Vanguard Group Inc ownership in PTCT / PTC Therapeutics, Inc.

2026-03-27 - Vanguard Group Inc has filed an SCHEDULE 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 0 shares of PTC Therapeutics, Inc. (US:PTCT). This represents 0.0 percent ownership of the company. In their previous filing dated 2025-10-30 , Vanguard Group Inc had reported owning 8,288,999 shares, indicating a decrease of -100.00 percent.

Institutional Ownership: 13D/G Filings

This table shows a history of the 13D/G filings made by the investor and/or investor group. Note that the share values in this table are not directly comparable to any numbers shown in the 13F table (if any).

File
Date		Effective
Date		Form Prev
Shares		 Latest
Shares		 ΔShares
(Percent)		 Ownership
(Percent)		 ΔOwnership
(Percent)
2026-03-27 2026-03-27 13G/A 8,288,999 0 -100.00 0.00 -100.00
2025-10-30 2025-10-30 13G/A 8,800,843 8,288,999 -5.82 10.43 -10.55
2024-02-13 2024-02-13 13G/A 7,339,520 8,800,843 19.91 11.66 14.20
2023-02-09 2023-02-09 13G/A 7,183,692 7,339,520 2.17 10.21 1.39
2022-07-11 2022-07-11 13G/A 6,888,909 7,183,692 4.28 10.07 3.39
2022-02-10 2022-02-10 13G/A 6,200,967 6,888,909 11.09 9.74 7.15
2021-02-10 2021-02-10 13G/A 5,441,640 6,200,967 13.95 9.09 3.06
2020-02-12 2020-02-12 13G/A 4,596,105 5,441,640 18.40 8.82 -3.08
2019-02-12 2019-02-12 13G/A 2,775,655 4,596,105 65.59 9.10 36.23
2018-02-09 2018-02-09 13G/A 1,918,708 2,775,655 44.66 6.68 19.50
2017-02-13 2017-02-13 13G/A 1,918,708 1,918,708 0.00 5.59 0.00
2017-02-11 2017-02-11 13G/A 2,046,376 1,918,708 -6.24 5.59 -6.37
2016-02-10 2016-02-10 13G 2,046,376 5.97

Important Note: One of the primary uses of the 13D/G filings is to evaluate the ability of a firm to control a company (ie, the "beneficial ownership"). To that end, firms are required to report not just direct holdings in companies, but indirect holdings that they control. For investment firms, these indirect holdings can include shares in funds they manage, advisory accounts, and in the case of activist campaigns, pledged votes. Therefore, share counts listed in 13D/G filings can differ significantly than share counts listed in 13F filings.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-01-29 2025-12-31 13F PTC THERAPEUTICS COM 69366J200 8,803,203 514,204 6.20 668,691 31.45 0.0097
2025-11-07 2025-09-30 13F PTC THERAPEUTICS COM 69366J200 8,288,999 -558,468 -6.31 508,696 17.72 0.0076
2025-08-11 2025-06-30 13F PTC THERAPEUTICS COM 69366J200 8,847,467 240,095 2.79 432,110 -1.49 0.0070
2025-05-09 2025-03-31 13F PTC THERAPEUTICS COM 69366J200 8,607,372 -571,450 -6.23 438,632 5.86 0.0079
2025-02-11 2024-12-31 13F PTC THERAPEUTICS COM 69366J200 9,178,822 53,688 0.59 414,332 22.39 0.0072
2024-11-13 2024-09-30 13F PTC THERAPEUTICS COM 69366J200 9,125,134 151,363 1.69 338,542 23.37 0.0061
2024-08-13 2024-06-30 13F PTC THERAPEUTICS COM 69366J200 8,973,771 -395,243 -4.22 274,418 0.69 0.0053
2024-05-10 2024-03-31 13F PTC THERAPEUTICS COM 69366J200 9,369,014 568,171 6.46 272,545 12.37 0.0054
2024-03-11 2023-12-31 13F/A-1 PTC THERAPEUTICS COM 69366J200 8,800,843 855,354 10.77 242,551 36.22 0.0053
2024-02-14 2023-12-31 13F PTC THERAPEUTICS COM 69366J200 8,800,843 855,354 242,551 0.0046
2023-12-18 2023-09-30 13F/A-1 PTC THERAPEUTICS COM 69366J200 7,945,489 393,012 5.20 178,058 -42.03 0.0044
2023-11-14 2023-09-30 13F PTC THERAPEUTICS COM 69366J200 7,945,489 393,012 178,058 0.0008
2023-08-14 2023-06-30 13F PTC THERAPEUTICS COM 69366J200 7,552,477 -35,305 -0.47 307,159 -16.43 0.0073
2023-07-14 2023-03-31 13F/A-1 PTC THERAPEUTICS COM 69366J200 7,587,782 248,262 3.38 367,552 31.20 0.0094
2023-05-15 2023-03-31 13F PTC THERAPEUTICS COM 69366J200 7,587,782 248,262 367,552 0.0094
2023-02-10 2022-12-31 13F PTC THERAPEUTICS COM 69366J200 7,339,520 127,800 1.77 280,149 -22.62 0.0076
2022-11-14 2022-09-30 13F PTC THERAPEUTICS COM 69366J200 7,211,720 28,028 0.39 362,027 25.80 0.0106
2022-08-12 2022-06-30 13F PTC THERAPEUTICS COM 69366J200 7,183,692 250,616 3.61 287,780 11.25 0.0081
2022-05-13 2022-03-31 13F PTC THERAPEUTICS COM 69366J200 6,933,076 44,167 0.64 258,673 -5.73 0.0061
2022-02-14 2021-12-31 13F PTC THERAPEUTICS COM 69366J200 6,888,909 130,935 1.94 274,386 9.11 0.0062
2021-11-12 2021-09-30 13F PTC THERAPEUTICS COM 69366J200 6,757,974 23,344 0.35 251,465 -11.67 0.0062
2021-08-13 2021-06-30 13F PTC THERAPEUTICS COM 69366J200 6,734,630 345,774 5.41 284,672 -5.90 0.0071
2021-05-14 2021-03-31 13F PTC THERAPEUTICS COM 69366J200 6,388,856 187,889 3.03 302,512 -20.06 0.0082
2021-02-12 2020-12-31 13F PTC THERAPEUTICS COM 69366J200 6,200,967 373,155 6.40 378,445 38.90 0.0110
2020-11-16 2020-09-30 13F PTC THERAPEUTICS COM 69366J200 5,827,812 155,476 2.74 272,450 -5.34 0.0090
2020-08-14 2020-06-30 13F PTC THERAPEUTICS COM 69366J200 5,672,336 93,165 1.67 287,815 15.64 0.0102
2020-05-15 2020-03-31 13F PTC THERAPEUTICS COM 69366J200 5,579,171 137,531 2.53 248,886 -4.77 0.0106
2020-02-14 2019-12-31 13F PTC THERAPEUTICS COM 69366J200 5,441,640 271,648 5.25 261,362 49.48 0.0089
2019-11-14 2019-09-30 13F PTC THERAPEUTICS COM 69366J200 5,169,992 99,318 1.96 174,849 -23.37 0.0065
2019-08-14 2019-06-30 13F PTC THERAPEUTICS COM 69366J200 5,070,674 102,485 2.06 228,180 22.02 0.0086
2019-05-15 2019-03-31 13F PTC THERAPEUTICS COM 69366J200 4,968,189 372,084 8.10 187,002 18.55 0.0073
2019-02-14 2018-12-31 13F PTC THERAPEUTICS COM 69366J200 4,596,105 137,810 3.09 157,739 -24.72 0.0071
2018-12-13 2018-09-30 13F/A-2 PTC THERAPEUTICS COM 69366J200 4,458,295 1,261,166 39.45 209,539 94.31 0.0082
2018-11-23 2018-09-30 13F/A-1 PTC THERAPEUTICS COM 69366J200 4,458,295 0 209,539 0.0082
2018-11-14 2018-09-30 13F PTC THERAPEUTICS COM 69366J200 4,458,295 1,261,166 209,539
2018-08-14 2018-06-30 13F PTC THERAPEUTICS COM 69366J200 3,197,129 236,465 7.99 107,839 34.60 0.0045
2018-05-15 2018-03-31 13F PTC THERAPEUTICS COM 69366J200 2,960,664 185,009 6.67 80,116 73.05 0.0035
2018-02-14 2017-12-31 13F PTC THERAPEUTICS COM 69366J200 2,775,655 -159,638 -5.44 46,297 -21.18 0.0020
2017-11-14 2017-09-30 13F PTC THERAPEUTICS COM 69366J200 2,935,293 568,729 24.03 58,735 35.40 0.0027
2017-08-24 2017-06-30 13F/A-1 PTC THERAPEUTICS COM 69366J200 2,366,564 346,525 17.15 43,379 118.24 0.0021
2017-08-11 2017-06-30 13F PTC THERAPEUTICS COM 69366J200 2,366,564 346,525 43,379
2017-05-12 2017-03-31 13F PTC THERAPEUTICS COM 69366J200 2,020,039 101,331 5.28 19,877 -5.05 0.0010
2017-02-14 2016-12-31 13F PTC THERAPEUTICS COM 69366J200 1,918,708 69,261 3.74 20,934 -19.21 0.0012
2016-11-14 2016-09-30 13F PTC THERAPEUTICS COM 69366J200 1,849,447 -480,355 -20.62 25,911 58.43 0.0015
2016-08-10 2016-06-30 13F PTC THERAPEUTICS COM 69366J200 2,329,802 269,642 13.09 16,355 23.27 0.0010
2016-05-13 2016-03-31 13F PTC THERAPEUTICS COM 69366J200 2,060,160 13,784 0.67 13,268 -79.99 0.0009
2016-02-08 2015-12-31 13F PTC THERAPEUTICS COM 69366J200 2,046,376 54,416 2.73 66,303 24.66 0.0045
2015-11-12 2015-09-30 13F/A-1 PTC THERAPEUTICS COM 69366J200 1,991,960 271,569 15.79 53,186 -35.77 0.0023
2015-11-12 2015-09-30 13F/A-1 PTC THERAPEUTICS COM 69366J200 1,991,960 271,569 53,186 0.0023
2015-08-13 2015-06-30 13F PTC THERAPEUTICS COM 69366J200 1,720,391 89,754 5.50 82,803 -16.55 0.0056
2015-05-15 2015-03-31 13F/A-1 PTC THERAPEUTICS COM 69366J200 1,630,637 455,461 38.76 99,225 63.09 0.0067
2015-05-14 2015-03-31 13F PTC THERAPEUTICS COM 69366J200 1,630,637 99,225
2015-02-12 2014-12-31 13F PTC THERAPEUTICS COM 69366J200 1,175,176 609,178 107.63 60,839 144.25 0.0044
2014-11-12 2014-09-30 13F PTC THERAPEUTICS COM 69366J200 565,998 17,194 3.13 24,909 73.64 0.0019
2014-08-11 2014-06-30 13F PTC THERAPEUTICS COM 69366J200 548,804 82,849 17.78 14,345 17.78 0.0011
2014-05-13 2014-03-31 13F PTC THERAPEUTICS COM 69366J200 465,955 318,506 216.01 12,180 386.81 0.0010
2014-02-12 2013-12-31 13F PTC THERAPEUTICS COM 69366J200 147,449 92,261 167.18 2,502 111.32 0.0002
2013-11-07 2013-09-30 13F PTC THERAPEUTICS COM 69366J200 55,188 55,188 1,184 0.0001
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.