Position in PTCT
as of Jun 30, 2026
· filed Aug 4, 2026
Position Value
$58,614,080
+$14,501,132 QoQ
Shares Held
718,574
+11.0% QoQ
Ownership
0.861%
of shares outstanding
% of Portfolio
0.05%
of 13F equity value
Holder Rank
#32
of 382 holders
Holding Since
Sep 2025
4 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in PTCT Over Time
Shares Held
Position Value (USD)
Position in Biotechnology
Healthcare · as of Jun 30, 2026Boston Partners holds $329,375,186 across 6 Biotechnology names. PTCT ranks #2 (17.8% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | HALO |
Halozyme Therapeutics, Inc.
|
2,773,568 | $217,087,166 | |
| 2 | PTCT |
Ptc Therapeutics, Inc.
This page
|
718,574 | $58,614,080 | |
| 3 | INVA |
Innoviva, Inc.
|
1,927,959 | $43,783,948 | |
| 4 | BMRN |
Biomarin Pharmaceutical Inc
|
153,446 | $8,780,179 | |
| 5 | HRMY |
Harmony Biosciences Holdings, Inc.
|
30,481 | $1,109,813 | |
| 6 | 1,658,936 | $0 |
All Filings in PTCT
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4 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $58,614,080 | 718,574 | Shares | Defined | 2026-08-04 | |
| 2026-03-31 | $44,112,948 | 647,482 | Shares | Defined | 2026-05-11 | |
| 2025-12-31 | $37,066,732 | 487,977 | Shares | Defined | 2026-02-13 | |
| 2025-09-30 | $22,195,319 | 361,664 | Shares | Defined | 2025-11-13 | |
| No filing history on record for this holder in this stock. | ||||||