Iridian Asset Management portfolio
Concentrated managerInvestment firmPortfolio as of Sep 30, 2026 (Q3 2026) · filed with the SEC on Oct 23, 2026 · data updated on Nov 5, 2026 · Q3 2026 13F (filing) ↗ · all its 13F filings ↗
A 13F shows the portfolio at quarter-end and is filed up to 45 days later: these are not real-time positions and they may have changed.
Iridian Asset Management reported a $275M portfolio of 40 companies (41 positions, counting each share class separately) to the SEC as of the end of Q3 2026. Its largest positions are ACVA, PGEN, HLF. During the quarter it opened Xylem and Clear Secure.
Sections with a free account
What it reported after the quarter end (Q3 2026)
The 13F shows the portfolio as of Sep 30, 2026. Since then Iridian Asset Management has filed these own trades with the SEC (Form 4, when it owns more than 10% of a company or holds a role in it) and stakes above 5% (13D and 13G). It is not everything it did: only what it must report before the next 13F.
- 13G/AKatapult Holdings19.5 % → 1.1 %
Stake reported in the company · event of Sep 18, 2026 · filed Oct 1, 2026 · filing ↗
What changed this quarter
38 positions with a change (3 new, 12 added to, 20 trimmed, 3 sold). 11 are listed here: those of 0.5 points of the portfolio or more (up to 12).
- ACV Auctions−33%fewer sharesReduced11.3% → 11.7%
- Hilton Grand Vacations+55%more sharesIncreased8.3% → 9.0%
- Precigen−24%fewer sharesReduced7.9% → 9.5%
- Lithia Motors−27%fewer sharesReduced6.4% → 5.0%
- Nektar Therapeutics+144%more sharesIncreased0.9% → 2.1%
- Post Holdings+19%more sharesIncreased6.8% → 7.1%
- Bill Holdings−34%fewer sharesReduced2.3% → 1.9%
- Xylem+0.7 ppof portfolioNew— → 0.8%
- Elevance Health−32%fewer sharesReduced2.0% → 1.5%
- Clear Secure+0.6 ppof portfolioNew— → 0.6%
- Rentokil Initial+54%more sharesIncreased1.5% → 1.6%
The figure on the right: for positions added to or trimmed, the change in the number of shares (%); for new and sold ones, the points of the portfolio moved (pp). Below, the portfolio weight before → after. Traded weight: what it bought or sold, excluding price effects.
Top holdings
- ACV AuctionsACVA11.7%
- PrecigenPGEN9.5%
- HerbalifeHLF9.1%
- Hilton Grand VacationsHGV9.0%
- Post HoldingsPOST7.1%
- Nuvectis PharmaNVCT6.1%
- Lithia MotorsLAD5.0%
- Travel & LeisureTNL4.5%
- Axsome TherapeuticsAXSM3.0%
- Element SolutionsESI3.0%
- LPL Financial HoldingsLPLA2.6%
- ON SemiconductorON2.5%
- Nektar TherapeuticsNKTR2.1%
- FLEXFLEX2.1%
- BILL HoldingsBILL1.9%
“Since”: first quarter of the current run, unbroken until today. In the details, prices are the quarter-end prices of the quarters in which it added shares, per the 13F. The manager may have bought at any price within each quarter; the SEC only publishes the value at quarter end.
Portfolio by sector
- ● Health Care 24%
- ● Consumer Discretionary 19%
- ● Consumer Staples 17%
- ● Industrials 17%
- ● Information Technology 8%
- ● Materials 6%
- ● Financials 4%
- ● Energy 3%
How its portfolio changed (8 quarters)
Q3 2026: 41
Q3 2026: 68%
Q3 2026: 12.0%
Traded turnover: the weight it bought plus the weight it sold in the quarter, divided by two, excluding price moves. The plain “turnover” in the header does include that effect. With a free account: the full history and sectors over time.
Stakes above 5% (13D/13G)
Companies where this filer reported holding 5% or more of the shares. It is the figure from its latest filing on each one; history since December 2024.
How we classify it
Investment firm, per its Form ADV of Aug 12, 2026 (high confidence).
The data, as reported: IRIDIAN ASSET MANAGEMENT LLC (CRD 104550): 7.B private funds: 2 hedge, 1 other (gross assets $146M); 5.D assets by client type: pooled vehicles 59%, high net worth 30%, corporations 9% (of $280M)
The type comes from a rule applied to that data. If it looks wrong, tell us.
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