Bamco INC /Ny/
Reported US equity positions for Q1 2026 — $33.1B across 326 positions.
| Holding | Reported value | Share of portfolio | Shares |
|---|---|---|---|
| TSLA Tesla, Inc. | $4.4B | 13.4% | 11,933,509 |
| G0450A105 Arch Cap Group LTD | $1.6B | 4.8% | 16,709,759 |
| MSCI MSCI Inc. | $1.5B | 4.4% | 2,699,389 |
| GWRE Guidewire Software, Inc. | $986.7M | 3.0% | 6,597,453 |
| IT Gartner, Inc. | $937.0M | 2.8% | 5,917,616 |
| IDXX IDEXX Laboratories, Inc. | $917.8M | 2.8% | 1,633,367 |
| H Hyatt Hotels Corporation Class A | $911.9M | 2.8% | 6,341,673 |
| FIGS FIGS, Inc. Class A | $885.6M | 2.7% | 59,959,449 |
| FDS FactSet Research Systems Inc. | $815.1M | 2.5% | 3,756,587 |
| CHH Choice Hotels International, Inc. | $796.0M | 2.4% | 7,690,494 |
| RRR Red Rock Resorts, Inc. | $715.7M | 2.2% | 13,412,846 |
| SCHW The Charles Schwab Corporation | $701.5M | 2.1% | 7,464,316 |
| KNSL Kinsale Capital Group, Inc. | $692.8M | 2.1% | 2,027,765 |
| CSGP CoStar Group, Inc. | $658.1M | 2.0% | 16,314,175 |
| MTN Vail Resorts, Inc. | $647.2M | 2.0% | 5,043,533 |
| L8681T102 Spotify Technology S A | $639.9M | 1.9% | 1,319,525 |
| SHOP Shopify Inc. - Class A Subordinate Voting Shares | $559.7M | 1.7% | 4,718,230 |
| NVDA NVIDIA Corporation | $509.2M | 1.5% | 2,919,758 |
| VRSK Verisk Analytics, Inc. | $476.6M | 1.4% | 2,511,976 |
| M2029K104 Birkenstock Holding PLC | $335.6M | 1.0% | 9,366,068 |
| H5919C104 On Hldg Ag | $330.5M | 1.0% | 9,714,605 |
| VRT Vertiv Holdings, LLC Class A | $296.0M | 0.9% | 1,181,144 |
| SITE SiteOne Landscape Supply, Inc. | $274.1M | 0.8% | 2,059,076 |
| IBKR Interactive Brokers Group, Inc. | $271.5M | 0.8% | 4,047,376 |
| AMZN Amazon.com, Inc. | $269.6M | 0.8% | 1,294,654 |
| WELL Welltower Inc. | $265.9M | 0.8% | 1,344,941 |
| EQIX Equinix, Inc. | $239.2M | 0.7% | 243,975 |
| PRI Primerica, Inc. | $215.4M | 0.7% | 860,026 |
| TSM Taiwan Semiconductor Manufacturing Company Ltd. | $215.0M | 0.6% | 636,267 |
| APH Amphenol Corporation | $209.7M | 0.6% | 1,659,690 |
| GDS GDS Holdings Limited | $185.2M | 0.6% | 4,597,246 |
| ABNB Airbnb, Inc. | $182.0M | 0.5% | 1,441,221 |
| PWR Quanta Services, Inc. | $178.9M | 0.5% | 325,840 |
| WYNN Wynn Resorts, Limited | $176.4M | 0.5% | 1,736,856 |
| MTD Mettler-Toledo International, Inc. | $168.5M | 0.5% | 133,639 |
| IOT Samsara Inc. Class A | $162.2M | 0.5% | 5,119,835 |
| AVGO Broadcom Inc. | $161.9M | 0.5% | 523,219 |
| HLI Houlihan Lokey, Inc. Class A | $152.4M | 0.5% | 1,061,403 |
| META Meta Platforms, Inc. | $146.9M | 0.4% | 256,700 |
| CBRE CBRE Group Inc Common Stock Class A | $145.5M | 0.4% | 1,074,451 |
| LLYVK Liberty Live Holdings, Inc. - Series C Liberty Live Group | $143.6M | 0.4% | 1,525,473 |
| PLD Prologis, Inc. | $140.9M | 0.4% | 1,065,747 |
| FPS Forgent Power Solutions INC | $136.8M | 0.4% | 4,674,583 |
| LOAR Loar Holdings INC | $135.6M | 0.4% | 2,366,299 |
| MORN Morningstar, Inc. | $128.4M | 0.4% | 759,515 |
| TOL Toll Brothers, Inc. | $127.2M | 0.4% | 932,031 |
| BN Brookfield Corporation Class A Limited Voting Shares | $117.6M | 0.4% | 2,905,510 |
| GOOGL Alphabet Inc. | $110.0M | 0.3% | 382,577 |
| NOVT Novanta Inc. | $108.1M | 0.3% | 915,083 |
| KRMN Karman Hldgs INC | $102.4M | 0.3% | 1,279,093 |
| ARGX argenx SE | $101.2M | 0.3% | 138,648 |
| RBC RBC Bearings Incorporated | $98.6M | 0.3% | 181,481 |
| NPO Enpro Inc. | $98.2M | 0.3% | 391,730 |
| NET Cloudflare, Inc. Class A | $94.4M | 0.3% | 457,324 |
| HTFL Heartflow INC | $93.1M | 0.3% | 3,827,531 |
| DKNG DraftKings Inc. | $91.2M | 0.3% | 4,218,766 |
| TDG Transdigm Group Incorporated | $91.2M | 0.3% | 78,664 |
| BFAM Bright Horizons Family Solutions Inc. | $90.5M | 0.3% | 1,102,308 |
| PLNT Planet Fitness, Inc. | $89.3M | 0.3% | 1,200,064 |
| HEI.A Heico Corporation | $88.5M | 0.3% | 419,407 |
Long US equity positions only, as filed. 13F does not cover short positions, cash, bonds or non-US listings, so this is not the whole portfolio.
What changed last quarter
| Holding | Change | Now | Was | Shares |
|---|---|---|---|---|
| G0450A105 Arch Cap Group LTD | Trim | $1.6B | $1.7B | -7% |
| MSCI MSCI Inc. | Trim | $1.5B | $1.6B | -2% |
| GWRE Guidewire Software, Inc. | Add | $986.7M | $1.0B | +28% |
| IT Gartner, Inc. | Add | $937.0M | $1.1B | +40% |
| IDXX IDEXX Laboratories, Inc. | Trim | $917.8M | $1.2B | -9% |
| H Hyatt Hotels Corporation Class A | Add | $911.9M | $979.0M | +4% |
| FDS FactSet Research Systems Inc. | Add | $815.1M | $838.3M | +30% |
| CHH Choice Hotels International, Inc. | Add | $796.0M | $703.6M | +4% |
| RRR Red Rock Resorts, Inc. | Add | $715.7M | $775.6M | +7% |
| SCHW The Charles Schwab Corporation | Add | $701.5M | $705.4M | +6% |
| KNSL Kinsale Capital Group, Inc. | Add | $692.8M | $696.7M | +14% |
| CSGP CoStar Group, Inc. | Trim | $658.1M | $1.3B | -16% |
| MTN Vail Resorts, Inc. | Add | $647.2M | $638.8M | +5% |
| L8681T102 Spotify Technology S A | Add | $639.9M | $579.1M | +32% |
| SHOP Shopify Inc. - Class A Subordinate Voting Shares | Add | $559.7M | $368.3M | +106% |
| NVDA NVIDIA Corporation | Trim | $509.2M | $557.4M | -2% |
| VRSK Verisk Analytics, Inc. | Add | $476.6M | $291.4M | +93% |
| M2029K104 Birkenstock Holding PLC | Add | $335.6M | $325.8M | +18% |
| H5919C104 On Hldg Ag | Add | $330.5M | $251.2M | +80% |
| VRT Vertiv Holdings, LLC Class A | Trim | $296.0M | $250.4M | -24% |
| SITE SiteOne Landscape Supply, Inc. | Add | $274.1M | $252.7M | +2% |
| IBKR Interactive Brokers Group, Inc. | Trim | $271.5M | $298.6M | -13% |
| AMZN Amazon.com, Inc. | Add | $269.6M | $282.8M | +6% |
| WELL Welltower Inc. | Add | $265.9M | $237.1M | +5% |
| EQIX Equinix, Inc. | Add | $239.2M | $111.4M | +68% |
| PRI Primerica, Inc. | Trim | $215.4M | $292.6M | -24% |
| APH Amphenol Corporation | Trim | $209.7M | $231.2M | -3% |
| GDS GDS Holdings Limited | Add | $185.2M | $132.1M | +21% |
| ABNB Airbnb, Inc. | Add | $182.0M | $119.4M | +64% |
| WYNN Wynn Resorts, Limited | Add | $176.4M | $146.8M | +42% |
| MTD Mettler-Toledo International, Inc. | Trim | $168.5M | $204.0M | -9% |
| IOT Samsara Inc. Class A | Add | $162.2M | $146.1M | +24% |
| AVGO Broadcom Inc. | Trim | $161.9M | $186.1M | -3% |
| HLI Houlihan Lokey, Inc. Class A | Trim | $152.4M | $195.8M | -6% |
| META Meta Platforms, Inc. | Trim | $146.9M | $178.3M | -5% |
| CBRE CBRE Group Inc Common Stock Class A | Trim | $145.5M | $218.6M | -21% |
| LLYVK Liberty Live Holdings, Inc. - Series C Liberty Live Group | Trim | $143.6M | $134.2M | -5% |
| PLD Prologis, Inc. | Trim | $140.9M | $141.6M | -4% |
| LOAR Loar Holdings INC | Add | $135.6M | $144.1M | +12% |
| MORN Morningstar, Inc. | Trim | $128.4M | $269.9M | -39% |
New and exited positions are only shown for managers whose entire filed portfolio fits inside the positions stored here. For a manager filing more than that, a holding leaving the stored set is indistinguishable from a holding being sold, so those are reported as adds and trims only.
What a 13F is
Any institutional manager exercising discretion over more than $100 million in US-listed equities must file a Form 13F with the SEC within 45 days of each quarter end, listing what they held on the last day of that quarter. The threshold was set in 1975 and has never been raised, so the filer population now runs to several thousand.
The four things it does not tell you
- It is stale. A filing describes positions as of quarter end and can arrive 45 days later. A manager who sold everything in week one of the new quarter files the same document as one who held.
- Long US equities only. No short positions, no cash, no bonds, no commodities, no foreign listings. A fund that looks heavily long in a 13F may be hedged in instruments that never appear.
- Not the whole firm. Assets are reported by the entity with discretion, so one manager can file under several CIKs, and the figure here is what that entity reported.
- Confidential treatment exists. A manager can apply to delay disclosing a position while building it. Those holdings appear later, if at all.
Why the biggest filers are not the interesting ones
The largest managers by reported value are index providers — they hold nearly everything, in proportion to the indices they track, because clients asked them to. Reading their filings for conviction is a category error. The filings worth attention are concentrated ones, where a small number of positions make up most of the portfolio, since that reflects a decision rather than a mandate.
The share-of-portfolio column is the one to read for this. A position that is 15% of a fund says something; the same dollar amount at 0.2% of an index tracker does not.
Where this comes from
The SEC's own quarterly Form 13F structured data sets, parsed here rather than bought from a vendor. Holdings are identified in the filings by CUSIP, and the mapping from CUSIP to ticker is the awkward part — that identifier is licensed rather than public, so the mapping is resolved through OpenFIGI and built up over time. Around 95% of reported value currently sits on a resolved ticker; the rest shows its CUSIP.
The rest of the section is on the Markets overview — including insider transactions, which are the same idea at the individual level, and the correlation finder, where each ticker's page carries its institutional ownership.