RA CAPITAL MANAGEMENT, L.P.

FundBoston · 2 holdings reports on file, from 2026 · Not one of the 16 funds we watch

$11.5B

Reported value of US stock holdings on Jun 30, the filing's own figure

84 positions · filed Aug 14, 45 days after the quarter ended

Not watched

Aeon posts holdings changes on the feed for the 16 watched managers; this fund's holdings are shown here each quarter.

Why no record

A holdings report says nothing about how a manager has done, because it gives no prices. That is why managers are never ranked.

What changed last quarter

Quarter ended Jun 30 · filed Aug 14 · against the report before it

New positions

17, biggest 4

no ticker ASCENDIS PHARMA A/S 10.3M shares23.8% of this fund's holdings

PBLS PARABILIS MEDICINES INC 28.9M shares6.9% of this fund's holdings

COAG HEMAB THERAPEUTICS HOLDINGS 7.8M shares2.5% of this fund's holdings

ABVX ABIVAX SA-ADR 1.1M shares1.3% of this fund's holdings

Sold out

18, biggest 4

no ticker ASCENDIS PHARMA A/S - ADR All 10.3M shares

DNTH DIANTHUS THERAPEUTICS INC All 2.6M shares

PRAX PRAXIS PRECISION MEDICINES I All 374K shares

SRPT SAREPTA THERAPEUTICS INC All 3.9M shares

Added to

7, biggest 4

ARTV ARTIVA BIOTHERAPEUTICS INC +8.1M shares+82%

SLDB SOLID BIOSCIENCES INC +2.7M shares+29%

XNCR XENCOR INC +377K shares+8%

ACRS ACLARIS THERAPEUTICS INC +5.9M shares+87%

Trimmed

8, biggest 4

EWTX EDGEWISE THERAPEUTICS INC −2.0M shares−20%

no ticker NUVALENT INC-A −1.3M shares−51%

GERN GERON CORP −21.0M shares−33%

VOR VOR BIOPHARMA INC −3.0M shares−56%

Top holdings

Reference, not news

Top holdings · 84 positionsSwipe →

#TickerCompanyShares Share of this fund's holdingsvs last quarter

1 ASCENDIS PHARMA A/S 10.3M 23.8% New

2 PBLS PARABILIS MEDICINES INC 28.9M 6.9% New

3 RYTM RHYTHM PHARMACEUTICALS INC 6.7M 6.4% No change

4 PCVX VAXCYTE INC 11.5M 5.8% No change

5 SION SIONNA THERAPEUTICS INC 9.9M 3.8% No change

6 TYRA TYRA BIOSCIENCES INC 12.2M 3.4% No change

7 EWTX EDGEWISE THERAPEUTICS INC 8.4M 3.0% −20%

8 NEWAMSTERDAM PHARMA CO NV 9.6M 2.8% No change

Ranked by value in the report. Share of this fund's holdings means the position's value as a share of the fund's reported total. It is not a share of any company; that is what a stake percent means.

Stakes filed by this fund

Schedules 13D and 13G · 3 on file

StakeStake reportSep 22

9% of the shares BETRF BetterLife Pharma Inc.

Schedule 13G: passive

First filing

StakeStake reportSep 21

14.3% of the shares SION SIONNA THERAPEUTICS, INC.

Schedule 13D: may seek changes

Amendment

StakeStake reportSep 17

19.9% of the shares TYRA TYRA BIOSCIENCES, INC.

Schedule 13D: may seek changes

Amendment