13F Portfolios

Frazier Life Sciences Management, L.P. 13F: Quarter-over-Quarter Portfolio Changes

Frazier Life Sciences Management, L.P. reported a disclosed portfolio value of approximately $3.9 billion in its latest SEC Form 13F-HR filing for Q1 2026, up 4.4% quarter on quarter. Over the quarter, the fund initiated 4 new positions, bought more shares in 8 holdings, trimmed 9 holdings, and exited 6 positions.

Frazier Life Sciences Management, L.P.'s top buy was a new stake in Biocryst Pharmaceuticals INC (BCRX) , equal to 1.0% of the disclosed portfolio. Its top sell was Avidity Biosciences INC (RNAGBP) . The fund exited the position completely after it had accounted for 1.9% of the previous portfolio.

New PositionsQ1 2026

Securities disclosed for the first time in Q1 2026 that were not present in the prior 13F-HR filing.

Frazier Life Sciences Management, L.P. new positions in Q1 2026, representing first-time disclosed long equity stakes
CompanyTickerInitial Portfolio WeightHistory
BIOCRYST PHARMACEUTICALS INCBCRX1.0%Holders →
ACLARIS THERAPEUTICS INCACRS0.5%Holders →
MONTE ROSA THERAPEUTICS INCGLUE0.4%Holders →
XILIO THERAPEUTICS INCXLO0.1%Holders →

Top BuysQ1 2026

The fund's top buys among existing positions in Q1 2026. Ranked by portfolio-weight impact, with the percentage of additional shares shown separately.

Frazier Life Sciences Management, L.P. top buys in existing positions in Q1 2026
CompanyTickerPortfolio Weight ChangeMore SharesHistory
MANNKIND CORPMNKD+-0.3%+39.6%Holders →
IMMUNOCORE HLDGS PLCIMCR+0.0%+26.0%Holders →
CYTOKINETICS INCCYTK+0.4%+24.1%Holders →
PALVELLA THERAPEUTICS INC NEPVLA+0.8%+22.1%Holders →
MIRUM PHARMACEUTICALS INCMIRM+3.8%+13.0%History →
ACADIA PHARMACEUTICALS INC.ACAD+-0.1%+10.9%Holders →
ERASCA INCERAS+8.0%+8.6%History →
DISC MEDICINE INCIRON+-0.5%+7.5%Holders →

Top SellsQ1 2026

The fund's top sells among positions it retained in Q1 2026. Ranked by portfolio-weight impact. Full exits are listed separately.

Frazier Life Sciences Management, L.P. top sells in existing positions in Q1 2026
CompanyTickerPortfolio Weight ChangeShares SoldHistory
REVOLUTION MEDICINES INCRVMD-0.0%15.3%Holders →
AUTOLUS THERAPEUTICS LTDAUTL-0.1%3.8%Holders →
TREVI THERAPEUTICS INCTRVI-0.4%3.1%History →
BRIDGEBIO PHARMA INCBBIO-0.7%2.7%History →
ALLOGENE THERAPEUTICS INCALLO0.1%1.9%Holders →
AGIOS PHARMACEUTICALS INCAGIO0.2%1.8%Holders →
KALVISTA PHARMACEUTICALSKALV0.4%1.6%Holders →
KRYSTAL BIOTECHKRYS-0.0%1.5%History →
SAVARA INCSVRA-0.2%1.4%Holders →

Full ExitsQ1 2026

Positions present in the prior 13F-HR filing that no longer appear in Q1 2026.

Frazier Life Sciences Management, L.P. full exits in Q1 2026
CompanyTickerLast-Reported Portfolio Weight
AVIDITY BIOSCIENCES INCRNAGBP1.9%
ABIVAX SAABVX1.4%
RAPT THERAPEUTICS INCRAPT0.9%
TRAVERE THERAPEUTICS INCTVTX0.2%
DESIGN THERAPEUTICS INCDSGN0.1%
XILIO THERAPEUTICS INCSYN_98422T1000.1%
Latest

Net Portfolio Value ChangeQ1 2026

  • $3.7B
    Prior quarter
  • $3.9B
    Current quarter
  • +$0.2B
    Net delta
  • +4.4%
    % change

Methodology & FAQ

How Frazier Life Sciences Management, L.P. Quarterly Changes Are Computed

All deltas are sourced from sequential SEC Form 13F-HR filings for Frazier Life Sciences Management, L.P.: each row joins the most recent filing against the immediately preceding quarterly filing for the same fund. Share-count changes reflect reported trading activity, while portfolio weights can also move because of market price changes. Portfolio weights are normalized to exclude listed options for comparability. A complete description — including how confidential treatment filings are handled — is documented in the Methodology.

What stocks did Frazier Life Sciences Management, L.P. buy in Q1 2026?

In Q1 2026, Frazier Life Sciences Management, L.P. initiated 4 new positions (BIOCRYST PHARMACEUTICALS INC (BCRX), ACLARIS THERAPEUTICS INC (ACRS), MONTE ROSA THERAPEUTICS INC (GLUE), XILIO THERAPEUTICS INC (XLO)); bought more shares of MANNKIND CORP (MNKD), IMMUNOCORE HLDGS PLC (IMCR), CYTOKINETICS INC (CYTK), PALVELLA THERAPEUTICS INC NE (PVLA), MIRUM PHARMACEUTICALS INC (MIRM) — the largest 5 of 8 adds.

What stocks did Frazier Life Sciences Management, L.P. sell in Q1 2026?

In Q1 2026, Frazier Life Sciences Management, L.P. fully sold 6 positions (AVIDITY BIOSCIENCES INC (RNAGBP), ABIVAX SA (ABVX), RAPT THERAPEUTICS INC (RAPT), TRAVERE THERAPEUTICS INC (TVTX), DESIGN THERAPEUTICS INC (DSGN), XILIO THERAPEUTICS INC (SYN_98422T100)); reduced holdings in REVOLUTION MEDICINES INC (RVMD), AUTOLUS THERAPEUTICS LTD (AUTL), TREVI THERAPEUTICS INC (TRVI), BRIDGEBIO PHARMA INC (BBIO), ALLOGENE THERAPEUTICS INC (ALLO) — the largest 5 of 9 reductions.

Which positions did Frazier Life Sciences Management, L.P. initiate in Q1 2026?

Frazier Life Sciences Management, L.P. established 4 new positions in Q1 2026: BIOCRYST PHARMACEUTICALS INC (BCRX, 1.0%), ACLARIS THERAPEUTICS INC (ACRS, 0.5%), MONTE ROSA THERAPEUTICS INC (GLUE, 0.4%), XILIO THERAPEUTICS INC (XLO, 0.1%).

Which existing positions saw the largest allocation increases for Frazier Life Sciences Management, L.P. in Q1 2026?

Of 8 existing positions with share-count increases in Q1 2026, the largest were: MANNKIND CORP (MNKD, +-0.3% weight, +39.6% shares), IMMUNOCORE HLDGS PLC (IMCR, +0.0% weight, +26.0% shares), CYTOKINETICS INC (CYTK, +0.4% weight, +24.1% shares), PALVELLA THERAPEUTICS INC NE (PVLA, +0.8% weight, +22.1% shares), MIRUM PHARMACEUTICALS INC (MIRM, +3.8% weight, +13.0% shares), ACADIA PHARMACEUTICALS INC. (ACAD, +-0.1% weight, +10.9% shares), ERASCA INC (ERAS, +8.0% weight, +8.6% shares), DISC MEDICINE INC (IRON, +-0.5% weight, +7.5% shares).

Which positions did Frazier Life Sciences Management, L.P. fully exit in Q1 2026?

Frazier Life Sciences Management, L.P. fully exited 6 positions in Q1 2026: AVIDITY BIOSCIENCES INC (RNAGBP, last-reported weight 1.9%), ABIVAX SA (ABVX, last-reported weight 1.4%), RAPT THERAPEUTICS INC (RAPT, last-reported weight 0.9%), TRAVERE THERAPEUTICS INC (TVTX, last-reported weight 0.2%), DESIGN THERAPEUTICS INC (DSGN, last-reported weight 0.1%), XILIO THERAPEUTICS INC (SYN_98422T100, last-reported weight 0.1%).

Which existing positions saw the largest allocation reductions for Frazier Life Sciences Management, L.P. in Q1 2026?

Of 9 existing positions with share-count reductions in Q1 2026, the largest were: REVOLUTION MEDICINES INC (RVMD, -0.0% weight, -15.3% shares), AUTOLUS THERAPEUTICS LTD (AUTL, -0.1% weight, -3.8% shares), TREVI THERAPEUTICS INC (TRVI, -0.4% weight, -3.1% shares), BRIDGEBIO PHARMA INC (BBIO, -0.7% weight, -2.7% shares), ALLOGENE THERAPEUTICS INC (ALLO, 0.1% weight, -1.9% shares), AGIOS PHARMACEUTICALS INC (AGIO, 0.2% weight, -1.8% shares), KALVISTA PHARMACEUTICALS (KALV, 0.4% weight, -1.6% shares), KRYSTAL BIOTECH (KRYS, -0.0% weight, -1.5% shares), SAVARA INC (SVRA, -0.2% weight, -1.4% shares).

Do quarter-over-quarter 13F allocation changes constitute explicit trading signals?

No. Quarter-over-quarter changes reflect a combination of active trading and market price movement. A weight increase can result from price appreciation alone, without the manager adding shares. Share-count delta is the cleaner indicator of explicit trading activity. All deltas on this page are sourced from sequential SEC Form 13F-HR filings.