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SECTORAL ASSET MANAGEMENT INC

Institutional InvestorSimilar funds →SEC EDGAR: CIK 1274413
Institutional-grade research for retail investors

Sector Allocation

  • Healthcare99.3%$142.4M
  • Technology0.7%$950,520

AUM History

13fpro.ai/research/fund/sectoral-asset-management-inc-1274413

Conviction and streaks

Diversifying · top 10 = 39.6%

From the fund's last 12 quarters of 13F filings: positions held longest at size, and names it added to or trimmed several quarters running.

CTNM$CTNMConviction hold8.3% weight · held 9 quartersSI$SIConviction hold6.1% weight · held 4 quartersLLY$LLYConviction hold5.3% weight · held 10 quartersUNH$UNHConviction hold3.8% weight · held 10 quartersJNJ$JNJConviction hold3.2% weight · held 10 quartersBSX$BSXAccumulating+72% shares · 4 quarters runningBNTX$BNTXAccumulating+143% shares · 2 quarters runningINSM$INSMAccumulating+108% shares · 2 quarters runningISRG$ISRGAccumulating+21% shares · 2 quarters runningIMTX$IMTXAccumulating+257% shares · 2 quarters runningTRVI$TRVITrimming-51% shares · 4 quarters runningMLYS$MLYSTrimming-96% shares · 4 quarters runningBBIO$BBIOTrimming-75% shares · 4 quarters runningREGN$REGNTrimming-45% shares · 3 quarters runningCVS$CVSTrimming-67% shares · 3 quarters running

Largest positions — Q2 2026

Top 20 stock positions. Options are left out: 13F reports them at the underlying's value.

13fpro.ai/research/fund/sectoral-asset-management-inc-1274413

SECTORAL ASSET MANAGEMENT INC 13F holdings — Q2 2026

$143.3M portfolio (+18.7% QoQ) · 82 holdings · Q2 2026 13F · top 10 are 40% of the stock portfolio

All holdings — SECTORAL ASSET MANAGEMENT INC (Q2 2026)

82 disclosed positions from the Form 13F-HR on SEC EDGAR, with quarter-over-quarter share changes. Largest by value first; the ten above are not repeated.

Company
AMGN$AMGNAMGEN INC$3.3M—
SMMT$SMMTSummit Therapeutics Inc.$3.2M+216%
IRTC$IRTCiRhythm Holdings, Inc.$3.1MNew
ABBV$ABBVAbbVie Inc.$3.1M—
MRK$MRKMerck & Co., Inc.$2.8M—
AVBP$AVBPArriVent BioPharma, Inc.$2.7M+163%
VRTX$VRTXVERTEX PHARMACEUTICALS INC / MA$2.7M-22%
ARGX$ARGXARGENX SEadr$2.6M-21%
GILD$GILDGILEAD SCIENCES, INC.$2.6M-25%
INSM$INSMINSMED Inc$2.5M+18%
TECX$TECXTectonic Therapeutic, Inc.$2.4M+273%
ISRG$ISRGINTUITIVE SURGICAL INC$2.3M+11%
IMTX$IMTXImmatics N.V.$2.3M+237%
SYK$SYKSTRYKER CORP$2.2M+21%
AVTX$AVTXAvalo Therapeutics, Inc.$2.2MNew

What changed in Q2 2026

Against the previous quarter's 13F: 14 new, 17 added to, 18 trimmed, 9 sold out. Share-count changes; largest moves by dollar size first.

New positions (14)

  • ORKA$ORKAOruka Therapeutics, Inc.$4.0M

    first bought this quarter

  • DFTX$DFTXDefinium Therapeutics, Inc.$3.7M

    first bought this quarter

  • IRTC$IRTCiRhythm Holdings, Inc.$3.1M

    first bought this quarter

  • AVTX$AVTXAvalo Therapeutics, Inc.$2.2M

    first bought this quarter

  • CBIO$CBIOCRESCENT BIOPHARMA, INC.$2.2M

    first bought this quarter

  • PLSE$PLSEPULSE BIOSCIENCES, INC.$1.9M

    first bought this quarter

+8 more in the Excel export

Added to (17)

  • SMMT$SMMTSummit Therapeutics Inc.+216%

    now $3.2M · held 10+ qtrs

  • RCUS$RCUSArcus Biosciences, Inc.+146%

    now $3.4M · held 10+ qtrs

  • DXCM$DXCMDEXCOM INC+118%

    now $3.4M · held 6 qtrs

  • BNTX$BNTXBioNTech SE+89%

    now $3.9M · held 10+ qtrs, 2 adds in a row

  • TECX$TECXTectonic Therapeutic, Inc.+273%

    now $2.4M · held 5 qtrs

  • AVBP$AVBPArriVent BioPharma, Inc.+163%

    now $2.7M · held 6 qtrs

+11 more in the Excel export

Trimmed (18)

  • GILD$GILDGILEAD SCIENCES, INC.-25%

    now $2.6M · held 10+ qtrs

  • VRTX$VRTXVERTEX PHARMACEUTICALS INC / MA-22%

    now $2.7M · held 10+ qtrs, 2 trims in a row

  • UNH$UNHUNITEDHEALTH GROUP INC-12%

    now $5.5M · held 10+ qtrs

  • ABT$ABTABBOTT LABORATORIES-29%

    now $1.6M · held 10+ qtrs

  • ARGX$ARGXARGENX SE-21%

    now $2.6M · held 10+ qtrs

  • GPCR$GPCRStructure Therapeutics Inc.-69%

    now $232K · held 10+ qtrs, 3 trims in a row

+12 more in the Excel export

Sold out (9)

  • EVMN$EVMNEvommune, Inc.was $13.5M

    held 2 qtrs

  • RAPP$RAPPRapport Therapeutics, Inc.was $835K

    held 4 qtrs

  • BOLD$BOLDBoundless Bio, Inc.was $746K

    held 9+ qtrs

  • QURE$QUREuniQure N.V.was $499K

    held 7 qtrs

  • ALHC$ALHCAlignment Healthcare, Inc.was $474K
  • RDNT$RDNTRadNet, Inc.was $447K

+3 more in the Excel export

Firm AUM (Form ADV): $331.4M as of 2025-12-31 · SEC IAPD

Share

Holdings by quarter

Every 13F SECTORAL ASSET MANAGEMENT INC has filed, 41 earlier quarters. Pick one to see what it held then.

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Is it too late to follow SECTORAL ASSET MANAGEMENT?

Q2 2026 13F filed with the SEC on Aug 14, 2026. Prices are closing prices as of Oct 26, 2026.

Average quality of SECTORAL ASSET MANAGEMENT's top 20 holdings: 60/100 (our AI quality score, weighted by position size; 13 of the 20 are scored)

Top 10 since filing

-14.4%

Value-weighted move of the 10 largest stock positions

Turnover

19%

Last quarter; 65% over the last 4

Top 10 weight

40%

Share of the stock portfolio in its 10 largest positions

Held 4+ quarters

78%

Share of portfolio value in positions held a year or more

Highest-quality names it owns(among its 100 largest positions)

The 8 highest-scoring companies in this portfolio are a Pro feature.

How these are measured
  • Moves since the quarter-end and since the filing date use our own daily closing prices, from the close on (or just before) each date to the latest close.
  • Turnover is the lesser of shares bought or sold in a quarter, valued at the quarter-end prices in the 13F, divided by the average of the two quarters' stock portfolio values.
  • Quarters held and add/trim streaks count back only through quarters whose filed holdings add up to the filing's own cover-page total (back to Q1 2024 for this fund). A change counts as an add or a trim when the split-adjusted share count moves by more than 1%.
  • Estimate, not the fund's reported cost. For each quarter in the current holding period in which the fund's share count rose (split-adjusted), we take that quarter's average daily close and weight it by the shares added; sales do not change an average cost. Quarters where the stock's price history and the 13F's own implied price disagree by more than 2x are left out.
  • Put and call option rows report the value of the underlying shares, not a position the fund paid for, so they are left out of all of the above.

Portfolio Overview

SECTORAL ASSET MANAGEMENT INC disclosed 82 positions worth $143.3M in its Form 13F-HR for Q2 2026, led by $CTNM (Contineum Therapeutics, Inc.) at 8.3% of the equity portfolio, followed by $SI and $LLY. During the quarter the fund opened 14 new positions and exited 9 — including a new stake in $ORKA and a full exit from $EVMN. The portfolio is most concentrated in Healthcare (99.3% of disclosed assets). All figures are sourced directly from SECTORAL ASSET MANAGEMENT INC’s Form 13F-HR filing with the SEC under CIK 1274413.

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AI-Powered Hedge Fund Analysis: SECTORAL ASSET MANAGEMENT INC

13F Pro is an AI hedge fund tracker and stock research platform. For SECTORAL ASSET MANAGEMENT INC (SEC CIK: 1274413), the platform ingests every quarterly Form 13F filing and applies AI-powered analysis on top — 10 specialized AI analysts (value, growth, momentum, macro, activist, and more) debate the fund's top positions and publish AI-generated analysis with cited SEC sources.

Every holding in SECTORAL ASSET MANAGEMENT INC's portfolio is scored on an AI quality ranking built from its SEC filings (ROIC, FCF margin, revenue growth, institutional flow, earnings quality, shareholder dilution, and more). Track accumulation and distribution quarter over quarter, identify conviction positions, and see AI stock analysis for each position — alongside 8,700+ other institutional filers and 2,800+ AI-ranked companies.