Largest positions
| Issuer | Class | Value | Share |
|---|---|---|---|
| Space Exploration Techn Corp.CLASS A COM STK | CLASS A COM STK | $24,907,141,616 | 37.4% |
| Tesla Inc.COM | COM | $5,267,910,691 | 7.9% |
| MSCI Inc.COM | COM | $1,798,710,150 | 2.7% |
| Arch Cap Group LtdORD | ORD | $1,540,579,997 | 2.3% |
| Hyatt Hotels Corp.COM CL A | COM CL A | $1,410,978,224 | 2.1% |
| Shopify Inc.CL A SUB VTG SHS | CL A SUB VTG SHS | $1,273,740,242 | 1.9% |
| Spotify Technology S ASHS | SHS | $1,117,115,631 | 1.7% |
| Guidewire Software Inc.COM | COM | $1,106,767,811 | 1.7% |
| Schwab Charles Corp.COM | COM | $1,075,470,885 | 1.6% |
| Red Rock Resorts Inc.CL A | CL A | $1,066,406,983 | 1.6% |
| Idexx Labs Inc.COM | COM | $1,040,655,010 | 1.6% |
| Choice Hotels Intl Inc.COM | COM | $1,028,637,596 | 1.5% |
| Gartner Inc.COM | COM | $985,242,787 | 1.5% |
| Factset Resh Sys Inc.COM | COM | $966,532,948 | 1.5% |
| Vail Resorts Inc.COM | COM | $889,971,297 | 1.3% |
| Kinsale Cap Group Inc.COM | COM | $878,599,988 | 1.3% |
| Verisk Analytics Inc.COM | COM | $844,258,676 | 1.3% |
| Birkenstock Holding PLCCOM SHS | COM SHS | $634,245,375 | 1.0% |
| Figs Inc.CL A | CL A | $613,385,163 | 0.9% |
| Costar Group Inc.COM | COM | $612,469,928 | 0.9% |
| ON Hldg AGNAMEN AKT A | NAMEN AKT A | $599,652,453 | 0.9% |
| Nvidia CorporationCOM | COM | $593,328,078 | 0.9% |
| Morningstar Inc.COM | COM | $545,936,759 | 0.8% |
| Amazon Com Inc.COM | COM | $466,317,692 | 0.7% |
| Interactive Brokers Group INCOM CL A | COM CL A | $418,419,907 | 0.6% |
| Vertiv Holdings COCOM CL A | COM CL A | $328,063,667 | 0.5% |
| Taiwan Semiconductor ManufacSPONSORED ADS | SPONSORED ADS | $318,872,534 | 0.5% |
| Amphenol Corp.CL A | CL A | $281,769,763 | 0.4% |
| Welltower Inc.COM | COM | $279,640,658 | 0.4% |
| Samsara Inc.COM CL A | COM CL A | $255,605,217 | 0.4% |
| Airbnb Inc.COM CL A | COM CL A | $251,579,101 | 0.4% |
| Siteone Landscape Supply Inc.COM | COM | $232,114,894 | 0.3% |
| Forgent Power Solutions Inc.COM SHS CL A | COM SHS CL A | $227,494,039 | 0.3% |
| Quanta Svcs Inc.COM | COM | $227,380,712 | 0.3% |
| Equinix Inc.COM | COM | $203,930,052 | 0.3% |
| Loar Holdings Inc.COM SHS | COM SHS | $203,405,793 | 0.3% |
| Alphabet Inc.CAP STK CL A | CAP STK CL A | $195,206,930 | 0.3% |
| Broadcom Inc.COM | COM | $194,365,974 | 0.3% |
| Alphabet Inc.CAP STK CL C | CAP STK CL C | $191,356,108 | 0.3% |
| Primerica Inc.COM | COM | $190,826,943 | 0.3% |
| Mettler Toledo InternationalCOM | COM | $176,889,145 | 0.3% |
| Las Vegas Sands Corp.COM | COM | $174,795,801 | 0.3% |
| Eli Lilly & COCOM | COM | $168,567,892 | 0.3% |
| Toll Brothers Inc.COM | COM | $166,249,554 | 0.2% |
| Blackstone Digital InfrastruCOMMON STOCK | COMMON STOCK | $164,832,605 | 0.2% |
| Enpro Inc.COM | COM | $150,576,750 | 0.2% |
| Heico Corp. NewCL A | CL A | $145,116,156 | 0.2% |
| Moderna Inc.COM | COM | $139,316,702 | 0.2% |
| Novanta Inc.COM | COM | $137,984,147 | 0.2% |
| Datadog Inc.CL A COM | CL A COM | $132,355,568 | 0.2% |
Space Exploration Techn Corp.CLASS A COM STK$24,907,141,616
- Class
- CLASS A COM STK
- Share
- 37.4%
Tesla Inc.COM$5,267,910,691
- Class
- COM
- Share
- 7.9%
MSCI Inc.COM$1,798,710,150
- Class
- COM
- Share
- 2.7%
Arch Cap Group LtdORD$1,540,579,997
- Class
- ORD
- Share
- 2.3%
Hyatt Hotels Corp.COM CL A$1,410,978,224
- Class
- COM CL A
- Share
- 2.1%
Shopify Inc.CL A SUB VTG SHS$1,273,740,242
- Class
- CL A SUB VTG SHS
- Share
- 1.9%
Spotify Technology S ASHS$1,117,115,631
- Class
- SHS
- Share
- 1.7%
Guidewire Software Inc.COM$1,106,767,811
- Class
- COM
- Share
- 1.7%
Schwab Charles Corp.COM$1,075,470,885
- Class
- COM
- Share
- 1.6%
Red Rock Resorts Inc.CL A$1,066,406,983
- Class
- CL A
- Share
- 1.6%
Idexx Labs Inc.COM$1,040,655,010
- Class
- COM
- Share
- 1.6%
Choice Hotels Intl Inc.COM$1,028,637,596
- Class
- COM
- Share
- 1.5%
Gartner Inc.COM$985,242,787
- Class
- COM
- Share
- 1.5%
Factset Resh Sys Inc.COM$966,532,948
- Class
- COM
- Share
- 1.5%
Vail Resorts Inc.COM$889,971,297
- Class
- COM
- Share
- 1.3%
Kinsale Cap Group Inc.COM$878,599,988
- Class
- COM
- Share
- 1.3%
Verisk Analytics Inc.COM$844,258,676
- Class
- COM
- Share
- 1.3%
Birkenstock Holding PLCCOM SHS$634,245,375
- Class
- COM SHS
- Share
- 1.0%
Figs Inc.CL A$613,385,163
- Class
- CL A
- Share
- 0.9%
Costar Group Inc.COM$612,469,928
- Class
- COM
- Share
- 0.9%
ON Hldg AGNAMEN AKT A$599,652,453
- Class
- NAMEN AKT A
- Share
- 0.9%
Nvidia CorporationCOM$593,328,078
- Class
- COM
- Share
- 0.9%
Morningstar Inc.COM$545,936,759
- Class
- COM
- Share
- 0.8%
Amazon Com Inc.COM$466,317,692
- Class
- COM
- Share
- 0.7%
Interactive Brokers Group INCOM CL A$418,419,907
- Class
- COM CL A
- Share
- 0.6%
Vertiv Holdings COCOM CL A$328,063,667
- Class
- COM CL A
- Share
- 0.5%
Taiwan Semiconductor ManufacSPONSORED ADS$318,872,534
- Class
- SPONSORED ADS
- Share
- 0.5%
Amphenol Corp.CL A$281,769,763
- Class
- CL A
- Share
- 0.4%
Welltower Inc.COM$279,640,658
- Class
- COM
- Share
- 0.4%
Samsara Inc.COM CL A$255,605,217
- Class
- COM CL A
- Share
- 0.4%
Airbnb Inc.COM CL A$251,579,101
- Class
- COM CL A
- Share
- 0.4%
Siteone Landscape Supply Inc.COM$232,114,894
- Class
- COM
- Share
- 0.3%
Forgent Power Solutions Inc.COM SHS CL A$227,494,039
- Class
- COM SHS CL A
- Share
- 0.3%
Quanta Svcs Inc.COM$227,380,712
- Class
- COM
- Share
- 0.3%
Equinix Inc.COM$203,930,052
- Class
- COM
- Share
- 0.3%
Loar Holdings Inc.COM SHS$203,405,793
- Class
- COM SHS
- Share
- 0.3%
Alphabet Inc.CAP STK CL A$195,206,930
- Class
- CAP STK CL A
- Share
- 0.3%
Broadcom Inc.COM$194,365,974
- Class
- COM
- Share
- 0.3%
Alphabet Inc.CAP STK CL C$191,356,108
- Class
- CAP STK CL C
- Share
- 0.3%
Primerica Inc.COM$190,826,943
- Class
- COM
- Share
- 0.3%
Mettler Toledo InternationalCOM$176,889,145
- Class
- COM
- Share
- 0.3%
Las Vegas Sands Corp.COM$174,795,801
- Class
- COM
- Share
- 0.3%
Eli Lilly & COCOM$168,567,892
- Class
- COM
- Share
- 0.3%
Toll Brothers Inc.COM$166,249,554
- Class
- COM
- Share
- 0.2%
Blackstone Digital InfrastruCOMMON STOCK$164,832,605
- Class
- COMMON STOCK
- Share
- 0.2%
Enpro Inc.COM$150,576,750
- Class
- COM
- Share
- 0.2%
Heico Corp. NewCL A$145,116,156
- Class
- CL A
- Share
- 0.2%
Moderna Inc.COM$139,316,702
- Class
- COM
- Share
- 0.2%
Novanta Inc.COM$137,984,147
- Class
- COM
- Share
- 0.2%
Datadog Inc.CL A COM$132,355,568
- Class
- CL A COM
- Share
- 0.2%
The share class is shown on a wider screen.
The 50 largest of 345 positions by value, with holdings of the same security combined. The 200 largest are in this firm's machine-readable record. Share counts and quarter-on-quarter changes for each position are on EDGAR. View the full information table on EDGAR
This filing
- Form
- 13F-HR
- CIK
- 1017918
- File number
- 028-04011
- Options
- 0 call, 0 put
- In the 25 largest
- 77.6%
- Prior quarter
- $33,127,957,349 at 31 March 2026
- Positions opened
- 54
- Positions closed
- 35
Common questions
What are Bamco’s 13F holdings worth?
$66,640,911,675 across 345 positions for the quarter ended 30 June 2026.
What is Bamco’s largest 13F holding?
SPACE EXPLORATION TECHN CORP (CLASS A COM STK) was the largest position at $24,907,141,616, or 37.4% of reported 13F value, as of 30 June 2026.
How concentrated is Bamco’s 13F portfolio?
The ten largest positions accounted for 60.9% of reported value and the twenty-five largest for 77.6%, across 345 positions as of 30 June 2026.
Does Form 13F show everything Bamco manages?
No. Form 13F covers only long positions in exchange-traded securities over which the manager has investment discretion, valued at quarter end. It excludes cash, most bonds, private funds, and any assets the firm does not have discretion over, so it is neither the firm's total assets nor any individual client's portfolio.
How often does Bamco file its 13F?
Every quarter. Managers file within 45 days of each quarter's end, so the figures are a snapshot that changes between filings. This page shows the quarter ended 30 June 2026.
Answered from this filing and the prior quarter's.