Atom Investors LP
Long book
$1.40B
Q1 2026
Positions
641
Top-10 weight
10%
concentration
Last quarter
+12.9%
SPY +14.8%
Turnover
65%
of book per quarter
Strategy in plain words
auto-generated from filingsAtom Investors LP is a quantitative fund whose holdings reflect models, not opinions, running a $1.40B US long book across 641 positions.
The portfolio is broadly diversified across 641 positions (top 10 only 10%). Turnover is high — positions rotate quickly, so individual names matter less than the process. Current anchor positions: VANGUARD S&P 500 ETF, BIO-TECHNE CORP, EQUINIX INC, BROADCOM INC, SCOTTS MIRACLE-GRO CO.
Over the last 9 quarters its long book ran on average 0.9pp per quarter behind the S&P 500, beating the index in 2 of 9 quarters. Signal value of individual moves is limited — treat changes as weak evidence.
Implied long-book return vs S&P 500
methodology: positions priced quarterly, no shorts/options Fund long book S&P 500
Q1 2024
-0.8%
Q2 2024
+8.4%
Q3 2024
+0.9%
Q4 2024
-5.5%
Q1 2025
+7.1%
Q2 2025
+7.6%
Q3 2025
+0.0%
Q4 2025
+1.9%
Q1 2026
+12.9%
Sector allocation
Industrials 16%
Healthcare 14%
Technology 14%
Consumer discretionary 12%
Financials 11%
Other 9%
Services media 7%
Utilities 7%
Long book by quarter
What does Atom Investors own?
Q1 2026 13F| Company | Sector | Shares | Value | % of book | Change |
|---|---|---|---|---|---|
| TECH BIO-TECHNE CORP | Healthcare | 319.3K | $16.7M | 1.2% | -9.2% |
| AVGO BROADCOM INC | Technology | 37.2K | $11.5M | 0.8% | +417.9% |
| SMG SCOTTS MIRACLE-GRO CO | Other | 173.3K | $10.5M | 0.8% | +52.1% |
| AMZN AMAZON.COM INC | Consumer discretionary | 49.1K | $10.2M | 0.7% | +225.0% |
| NVDA NVIDIA CORP | Technology | 57.4K | $10.0M | 0.7% | +82.5% |
| LKQ LKQ CORP | Consumer discretionary | 335.1K | $9.8M | 0.7% | +66.7% |
| CSL CARLISLE COS INC | Other | 27.7K | $9.2M | 0.7% | +35.2% |
| DNTH DIANTHUS THERAPEUTICS INC | Healthcare | 107.8K | $9.0M | 0.6% | -40.7% |
| AEE AMEREN CORPORATION | Utilities | 80.8K | $8.9M | 0.6% | +226.0% |
| RS RELIANCE INC | Consumer discretionary | 29.2K | $8.9M | 0.6% | New |
| WEX WEX INC | Services media | 56.9K | $8.7M | 0.6% | New |
| CELC CELCUITY INC | Healthcare | 76.3K | $8.7M | 0.6% | -10.8% |
| HRB H&R BLOCK INC | Services media | 273.5K | $8.7M | 0.6% | +59.4% |
| LNT ALLIANT ENERGY CORP | Utilities | 118.4K | $8.5M | 0.6% | +39.3% |
| ALK ALASKA AIR GROUP INC | Industrials | 229.2K | $8.4M | 0.6% | +393.5% |
| BLDR BUILDERS FIRSTSOURCE INC | Consumer discretionary | 102.1K | $8.4M | 0.6% | +99.5% |
| WHD CACTUS INC - A | Industrials | 163.9K | $7.8M | 0.6% | +53.3% |
| REZI RESIDEO TECHNOLOGIES INC | Consumer discretionary | 229.6K | $7.7M | 0.6% | +69.4% |
| CDE COEUR MINING INC | Materials | 408.5K | $7.7M | 0.5% | New |
| BMY BRISTOL-MYERS SQUIBB CO | Healthcare | 124.5K | $7.6M | 0.5% | New |
| HBAN HUNTINGTON BANCSHARES INC | Financials | 478.5K | $7.5M | 0.5% | New |
| PCG P G & E CORP | Utilities | 419.9K | $7.4M | 0.5% | +43.8% |
| CVX CHEVRON CORP | Energy | 35.5K | $7.3M | 0.5% | New |
| STZ CONSTELLATION BRANDS INC-A | Consumer staples | 48.8K | $7.3M | 0.5% | +35.3% |
| PFGC PERFORMANCE FOOD GROUP CO | Consumer discretionary | 85.2K | $7.3M | 0.5% | +37.8% |
| RVTY REVVITY INC | Healthcare | 83.3K | $7.3M | 0.5% | New |
| KOD KODIAK SCIENCES INC | Healthcare | 190.8K | $7.3M | 0.5% | -8.1% |
| WTTR SELECT WATER SOLUTIONS INC | Energy | 464.3K | $7.1M | 0.5% | +106.2% |
| CNP CENTERPOINT ENERGY INC | Utilities | 164.0K | $7.1M | 0.5% | New |
| BURL BURLINGTON STORES INC | Consumer discretionary | 21.4K | $6.9M | 0.5% | +1977.7% |
| FND FLOOR & DECOR HOLDINGS INC-A | Consumer discretionary | 136.4K | $6.9M | 0.5% | +53.4% |
| NRG NRG ENERGY INC | Utilities | 46.9K | $6.9M | 0.5% | New |
| PRAX PRAXIS PRECISION MEDICINES I | Healthcare | 21.2K | $6.8M | 0.5% | +28.6% |
| PPL PPL CORP | Utilities | 177.1K | $6.8M | 0.5% | +90.6% |
| LMT LOCKHEED MARTIN CORP | Industrials | 11.1K | $6.7M | 0.5% | New |
| IMNM IMMUNOME INC | Healthcare | 306.9K | $6.7M | 0.5% | +74.6% |
| UTHR UNITED THERAPEUTICS CORP | Healthcare | 11.3K | $6.7M | 0.5% | New |
| PTEN PATTERSON-UTI ENERGY INC | Energy | 614.2K | $6.7M | 0.5% | New |
| AMAT APPLIED MATERIALS INC | Technology | 19.3K | $6.6M | 0.5% | +177.5% |
| BCO BRINK'S CO/THE | Industrials | 62.5K | $6.5M | 0.5% | +57.0% |
| WWW WOLVERINE WORLD WIDE INC | Other | 392.7K | $6.4M | 0.5% | +293.4% |
| NU NU HOLDINGS LTD/CAYMAN ISL-A | Financials | 444.2K | $6.4M | 0.5% | +72.8% |
| APO APOLLO GLOBAL MANAGEMENT INC | Financials | 57.2K | $6.4M | 0.5% | -43.8% |
| WFC WELLS FARGO & CO | Financials | 79.6K | $6.3M | 0.5% | +907.2% |
| CSX CSX CORP | Industrials | 154.0K | $6.3M | 0.5% | -40.3% |
| JBS JBS NV-A | Consumer staples | 344.6K | $6.2M | 0.4% | +73.7% |
| PATK PATRICK INDUSTRIES INC | Industrials | 54.9K | $6.1M | 0.4% | -18.1% |
| SPGI S&P GLOBAL INC | Services media | 14.3K | $6.1M | 0.4% | +617.1% |
| WMB WILLIAMS COS INC | Utilities | 83.7K | $6.1M | 0.4% | +101.2% |
| MBUU MALIBU BOATS INC - A | Industrials | 231.8K | $6.0M | 0.4% | +24.6% |
13F filing history
| Period | Form | Filed | Entries | Reported value | Flags | Source |
|---|---|---|---|---|---|---|
| Q1 2026 | 13F-HR | May 15, 2026 | 641 | $1.40B | canonical | SEC ↗ |
| Q4 2025 | 13F-HR | Feb 17, 2026 | 556 | $1.26B | canonical | SEC ↗ |
| Q3 2025 | 13F-HR | Nov 14, 2025 | 584 | $1.32B | canonical | SEC ↗ |
| Q2 2025 | 13F-HR | Aug 14, 2025 | 587 | $1.13B | canonical | SEC ↗ |
| Q1 2025 | 13F-HR | May 15, 2025 | 488 | $812.9M | canonical | SEC ↗ |
| Q4 2024 | 13F-HR | Feb 14, 2025 | 481 | $805.0M | canonical | SEC ↗ |
| Q3 2024 | 13F-HR | Nov 14, 2024 | 456 | $955.2M | canonical | SEC ↗ |
| Q2 2024 | 13F-HR | Aug 14, 2024 | 457 | $1.00B | canonical | SEC ↗ |
| Q1 2024 | 13F-HR | May 15, 2024 | 564 | $801.5M | canonical | SEC ↗ |
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