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Atom Investors LP

Institutional InvestorSimilar funds →SEC EDGAR: CIK 1738902
Institutional-grade research for retail investors

Sector Allocation

  • Technology19.8%$222.1M
  • Healthcare15.6%$175.5M
  • Industrials15.5%$174.6M
  • Financials13.4%$150.2M
  • Consumer Discretionary10.3%$116.4M
  • Other6.1%$68.9M
  • Real Estate4.3%$48.0M
  • Utilities3.4%$38.7M
  • Consumer Staples3.4%$37.9M
  • Energy3.4%$37.8M

AUM History

13fpro.ai/research/fund/atom-investors-lp-1738902

Conviction and streaks

Concentrating · top 10 = 11.0%

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.

Largest positions — Q2 2026

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

13fpro.ai/research/fund/atom-investors-lp-1738902

Atom Investors LP 13F holdings — Q2 2026

$1.1B portfolio (-19.5% QoQ) · 818 holdings · Q2 2026 13F · top 10 are 11% of the stock portfolio

All holdings — Atom Investors LP (Q2 2026)

818 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
NVDA$NVDANVIDIA CORP$6.8M-41%
VSEC$VSECVSE CORP$6.5MNew
AAPL$AAPLApple Inc.$6.3MNew
IMNM$IMNMImmunome Inc.$6.3M-3%
JBTM$JBTMJBT MAREL Corp$6.2MNew
VRSN$VRSNVERISIGN INC/CA$6.1M+308%
EQIX$EQIXEQUINIX INC$6.0M-52%
IVZ$IVZInvesco Ltd.$5.9MNew
HD$HDHOME DEPOT, INC.$5.9MNew
RARE$RAREUltragenyx Pharmaceutical Inc.$5.7M+83%
GGG$GGGGRACO INC$5.7MNew
AME$AMEAMETEK INC/$5.5M+62%
MSFT$MSFTMICROSOFT CORP$5.4M+31%
TTMI$TTMITTM TECHNOLOGIES INC$5.4M+245%
AMZN$AMZNAMAZON COM INC$5.4M-54%

What changed in Q2 2026

Against the previous quarter's 13F: 414 new, 146 added to, 253 trimmed, 239 sold out. Share-count changes; largest moves by dollar size first.

New positions (414)

  • HPE$HPEHewlett Packard Enterprise Co$9.7M

    first bought this quarter

  • ISHARES INC - MSCI BRAZIL ETF$8.1M

    first bought this quarter

  • VSEC$VSECVSE CORP$6.5M

    first bought this quarter

  • AAPL$AAPLApple Inc.$6.3M

    first bought this quarter

  • JBTM$JBTMJBT MAREL Corp$6.2M

    first bought this quarter

  • IVZ$IVZInvesco Ltd.$5.9M

    first bought this quarter

+408 more in the Excel export

Added to (146)

  • VTRS$VTRSViatris Inc+561%

    now $11.2M · held 2 qtrs, 2 adds in a row

  • INTC$INTCINTEL CORP+262%

    now $10.6M · held 2 qtrs, 2 adds in a row

  • ESAB$ESABESAB Corp+238%

    now $8.1M · held 3 qtrs

  • VRSN$VRSNVERISIGN INC/CA+308%

    now $6.1M · held 2 qtrs, 2 adds in a row

  • TTMI$TTMITTM TECHNOLOGIES INC+245%

    now $5.4M · held 2 qtrs, 2 adds in a row

  • SMTC$SMTCSEMTECH CORP+303%

    now $4.9M · held 3 qtrs

+140 more in the Excel export

Trimmed (253)

  • CSL$CSLCARLISLE COMPANIES INC-94%

    now $578K

  • NSIT$NSITINSIGHT ENTERPRISES INC-92%

    now $771K

  • BLDR$BLDRBuilders FirstSource, Inc.-94%

    now $592K

  • ATEX$ATEXAnterix Inc.-95%

    now $425K

  • LKQ$LKQLKQ CORP-91%

    now $767K

  • RVTY$RVTYREVVITY, INC.-86%

    now $1.3M

+247 more in the Excel export

Sold out (239)

  • TECH$TECHBIO-TECHNE Corpwas $16.7M

    held 2 qtrs

  • SMG$SMGSCOTTS MIRACLE-GRO COwas $10.5M

    held 2 qtrs

  • WEX$WEXWEX Inc.was $8.7M

    held 1 qtr

  • HRB$HRBH&R BLOCK INCwas $8.7M

    held 2 qtrs

  • ALK$ALKALASKA AIR GROUP, INC.was $8.4M

    held 4 qtrs

  • WHD$WHDCactus, Inc.was $7.8M

+233 more in the Excel export

Firm AUM (Form ADV): $6.8B as of 2025-12-31 · SEC IAPD

Holdings by quarter

Every 13F Atom Investors LP has filed, 30 earlier quarters. Pick one to see what it held then.

Email me the moment this fund files its next 13FPro

Is it too late to follow Atom Investors?

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

Average quality of Atom Investors's top 20 holdings: 60/100 (our AI quality score, weighted by position size; 19 of the 20 are scored)

Top 10 since filing

-10.6%

Value-weighted move of the 10 largest stock positions

Turnover

48%

Last quarter; 207% over the last 4

Top 10 weight

11%

Share of the stock portfolio in its 10 largest positions

Held 4+ quarters

15%

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

Atom Investors LP disclosed 818 positions worth $1.1B in its Form 13F-HR for Q2 2026, followed by $VTRS and $INTC. During the quarter the fund opened 414 new positions and exited 239 — including a new stake in $HPE and a full exit from $TECH. The portfolio is most concentrated in Technology (19.8% of disclosed assets). All figures are sourced directly from Atom Investors LP’s Form 13F-HR filing with the SEC under CIK 1738902.

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AI-Powered Hedge Fund Analysis: Atom Investors LP

13F Pro is an AI hedge fund tracker and stock research platform. For Atom Investors LP (SEC CIK: 1738902), 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 Atom Investors LP'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.