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LOOMIS SAYLES & CO L P

Position in PTCT — Ptc Therapeutics, Inc.

CIK 312348 BOSTON, MA

Position in PTCT

as of Mar 31, 2026 · filed May 14, 2026
Position Value
$33,629,171
-$9,537,885 QoQ
Shares Held
493,603
-53.5% QoQ
Ownership
0.595%
of shares outstanding
% of Portfolio
0.05%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Mar 2020
15 quarters on record
Voting authority Sole 91.84790205894211.ToString("F0")% Shared 0.ToString("F0")% None 8.152097941057896.ToString("F0")%

Common Shares in PTCT Over Time

Shares Held

Position Value (USD)

Position in Biotechnology

Healthcare · as of Mar 31, 2026

LOOMIS SAYLES & CO L P holds $4,075,180,510 across 25 Biotechnology names. PTCT ranks #11 (0.8% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in PTCT

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15 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $33,629,171 493,603
2023-06-30 $43,167,056 1,061,398
2023-03-31 $59,633,611 1,231,082
2022-12-31 $46,806,534 1,226,265
2022-09-30 $81,268,478 1,618,894
2022-06-30 $65,571,609 1,636,835
2022-03-31 $61,441,510 1,646,784
2021-12-31 $61,187,761 1,536,223
2021-09-30 $47,935,967 1,288,255
2021-06-30 $38,250,840 904,917
2021-03-31 $42,755,439 902,966
2020-12-31 $52,819,023 865,460
2020-09-30 $37,297,944 797,817
2020-06-30 $33,819,732 666,530
2020-03-31 $19,590,526 439,151