Follow-The-Filings

Featured 13F manager

BAMCO Inc (Baron Capital) Ron Baron

New York, NY 20 processed 13Fs on this site · 2021 Q3–2026 Q2

  • $66.6B
  • 345 Positions
  • 2026 Q2
  • +101.2% QoQ
  • Top 5 52.4%

Ron Baron files BAMCO Inc (Baron Capital) as a Form 13F. The latest book is 2026 Q2 at $66.6B, up 101.2% QoQ, led by Space Exploration Techn ·, Tesla, and MSCI Inc.

Portfolio

2026 Q2 · filed 8/14/2026 · 345 long · top 12 shown

top 5 52.4% · top 10 60.9%

AUM over time

2026 Q2 $66.6B +101.2% QoQ
2021 Q3 · $44.1B 2021 Q3 · $44.1B
Q3 2021
2021 Q4 · $47.1B · +6.8% QoQ 2021 Q4 · $47.1B · +6.8% QoQ
Q4
2022 Q1 · $40.7B · −13.6% QoQ 2022 Q1 · $40.7B · −13.6% QoQ
Q1 2022
2022 Q2 · $31.1B · −23.6% QoQ 2022 Q2 · $31.1B · −23.6% QoQ
Q2
2022 Q3 · $31B · −0.6% QoQ 2022 Q3 · $31B · −0.6% QoQ
Q3
2022 Q4 · $29.8B · −3.8% QoQ 2022 Q4 · $29.8B · −3.8% QoQ
Q4
2023 Q1 · $33.3B · +11.9% QoQ 2023 Q1 · $33.3B · +11.9% QoQ
Q1 2023
2023 Q2 · $36.1B · +8.4% QoQ 2023 Q2 · $36.1B · +8.4% QoQ
Q2
2023 Q3 · $34.4B · −4.7% QoQ 2023 Q3 · $34.4B · −4.7% QoQ
Q3
2023 Q4 · $37.5B · +9.1% QoQ 2023 Q4 · $37.5B · +9.1% QoQ
Q4
2024 Q1 · $37.5B · −0.1% QoQ 2024 Q1 · $37.5B · −0.1% QoQ
Q1 2024
2024 Q2 · $34.9B · −6.9% QoQ 2024 Q2 · $34.9B · −6.9% QoQ
Q2
2024 Q3 · $37.7B · +8.0% QoQ 2024 Q3 · $37.7B · +8.0% QoQ
Q3
2024 Q4 · $38.7B · +2.6% QoQ 2024 Q4 · $38.7B · +2.6% QoQ
Q4
2025 Q1 · $34B · −12.0% QoQ 2025 Q1 · $34B · −12.0% QoQ
Q1 2025
2025 Q2 · $36.9B · +8.3% QoQ 2025 Q2 · $36.9B · +8.3% QoQ
Q2
2025 Q3 · $37.7B · +2.2% QoQ 2025 Q3 · $37.7B · +2.2% QoQ
Q3
2025 Q4 · $36.9B · −2.1% QoQ 2025 Q4 · $36.9B · −2.1% QoQ
Q4
2026 Q1 · $33.1B · −10.2% QoQ 2026 Q1 · $33.1B · −10.2% QoQ
Q1 2026
2026 Q2 · $66.6B · +101.2% QoQ 2026 Q2 · $66.6B · +101.2% QoQ
Q2

Book

2025 Q1 2024 Q4 · filed 15 May · long equity

TSLA - Tesla 10.82% Reduce −2.5% 14,213,133 $259.16 $3.7B −365,676 −$2.2B
ACGL - Arch Cap Group 5.64% Reduce −2.4% 19,966,752 $96.18 $1.9B −495,972 +$31M
IT - Gartner 4.65% Reduce −3.7% 3,771,609 $419.74 $1.6B −144,594 −$314M
CSGP - Costar Group 4.43% Reduce −0.9% 19,032,522 $79.23 $1.5B −171,042 +$133M
MSCI - MSCI Inc 3.44% Reduce −2.8% 2,071,653 $565.50 $1.2B −60,278 −$108M
GWRE - Guidewire Software 3.12% Reduce −4.2% 5,667,682 $187.36 $1.1B −247,501 +$65M
FDS - Factset Resh Sys 3.00% Reduce −4.6% 2,248,026 $454.64 $1B −107,585 −$109M
IDXX - Idexx Labs 2.54% Add +2.7% 2,059,777 $419.95 $865M +54,255 +$36M
KNSL - Kinsale Cap Group 2.49% Add +0.7% 1,738,858 $486.71 $846M +12,254 +$43M
MTN - Vail Resorts 2.48% Reduce −0.1% 5,284,222 $160.02 $846M −6,324 −$146M
H - Hyatt Hotels · CL A 2.08% Add +4.3% 5,788,963 $122.50 $709M +238,174 −$162M
CHH - Choice Hotels Intl 1.82% Reduce −0.2% 4,673,034 $132.78 $620M −9,458 −$44M
SCHW - Schwab Charles 1.66% Add +0.1% 7,224,168 $78.28 $566M +6,340 +$31M
RRR - Red Rock Resorts · CL A 1.48% Add +2.2% 11,602,411 $43.37 $503M +246,210 −$22M
SPOT - Spotify Technology S A 1.43% Reduce −1.0% 887,956 $550.03 $488M −9,210 +$87M
PRI - Primerica 1.34% Reduce −3.1% 1,603,930 $284.53 $456M −51,617 +$7M
MORN - Morningstar 1.14% Reduce −0.4% 1,299,508 $299.87 $390M −5,647 −$50M
GLPI - Gaming & Leisure Pptys 1.14% Reduce −2.9% 7,594,545 $50.90 $387M −222,898 +$10M
VRSK - Verisk Analytics 1.06% Reduce −3.2% 1,212,494 $297.62 $361M −40,092 +$16M
MTD - Mettler Toledo 0.97% Reduce 0.0% 280,925 $1,181 $332M −69 −$12M
NVDA - Nvidia 0.91% Add +0.9% 2,872,061 $108.38 $311M +25,414 −$71M
ANSS - Ansys 0.79% Reduce −39.8% 852,310 $316.56 $270M −563,914 −$208M
FIGS - FIGS Inc · CL A 0.79% Add +90.3% 58,671,584 $4.59 $269M +27,833,825 +$78M
IRDM - Iridium Communications 0.74% Reduce −13.9% 9,271,284 $27.32 $253M −1,498,093 −$59M
SHOP - Shopify · CL A 0.71% Reduce −2.4% 2,519,934 $95.48 $241M −61,323 −$34M
VRT - Vertiv · CL A 0.63% Add +7.9% 2,966,603 $72.20 $214M +216,603 −$98M
SITE - Siteone Landscape Supply 0.61% Add +2.8% 1,699,711 $121.44 $206M +46,939 −$11M
AMZN - Amazon 0.60% Add 0.0% 1,080,478 $190.26 $206M +415 −$31M
WELL - Welltower 0.60% Add +14.8% 1,322,247 $153.21 $203M +170,752 +$57M
BABA - Alibaba Group 0.59% Add +6.1% 1,522,815 $132.23 $201M +88,195 +$80M
TECH - Bio Techne 0.56% Reduce −20.8% 3,275,806 $58.63 $192M −861,178 −$106M
HLI - Houlihan Lokey · CL A 0.54% Hold 1,144,179 $161.50 $185M
BIRK - Birkenstock 0.54% Add +19.8% 4,024,351 $45.85 $185M +665,000 −$6M
DAY - Dayforce 0.54% Reduce −10.9% 3,140,432 $58.33 $183M −386,024 −$73M
CBRE - CBRE Group · CL A 0.52% Reduce −2.0% 1,362,945 $130.78 $178M −28,040 −$4M
ONON - ON AG 0.52% Add +26.9% 4,007,218 $43.92 $176M +849,425 +$3M
META - Meta Platforms · CL A 0.48% Add 0.0% 281,113 $576.36 $162M +84 −$3M
FICO - Fair Isaac 0.47% Reduce −7.9% 86,240 $1,844 $159M −7,350 −$27M
BFAM — 0.47% Reduce −19.8% 1,250,197 $127.04 $159M −309,080 −$14M
CNS - Cohen & Steers 0.46% Reduce −3.2% 1,943,882 $80.25 $156M −65,000 −$30M
AMT - American Tower 0.45% New 699,676 $217.60 $152M +699,676 +$152M
IBKR - Interactive Brokers · CL A 0.44% Hold 913,967 $165.59 $151M
ROP - Roper Technologies 0.44% Add +0.1% 253,492 $589.58 $149M +175 +$18M
TDG - Transdigm Group 0.44% Hold 107,844 $1,383 $149M
INTA - Intapp 0.43% Add +1.1% 2,510,962 $58.38 $147M +26,950 −$13M
CWAN — · CL A 0.43% Add +2.0% 5,428,892 $26.80 $145M +103,922 −$1M
I3N - Chart Inds 0.40% Reduce −0.1% 951,203 $144.36 $137M −1,201 −$44M
KTOS — 0.40% Add +5.4% 4,609,546 $29.69 $137M +235,469 +$21M
MSFT - Microsoft 0.40% Reduce −36.8% 364,015 $375.39 $137M −212,226 −$106M
BWIN — · CL A 0.40% Hold 3,010,000 $44.69 $135M

Showing top 50 of 313 by value

Exits / last held

not current holdings · last reported size, unchanged · gone vs 2024 Q4

Stock % of portfolio Recent activity Shares Reported price* Value Share change $ change
Inari Med 0.17% Exit 0 $51.05 $67M −1,312,528 −$67M
Aspen Technology 0.16% Exit 0 $249.63 $63M −253,214 −$63M
Altair Engr · CL A 0.15% Exit 0 $109.11 $59M −539,002 −$59M
Ibotta · CLASS A 0.13% Exit 0 $65.08 $49M −756,087 −$49M
WEX — 0.09% Exit 0 $175.32 $36M −203,300 −$36M
Kanzhun 0.06% Exit 0 $13.80 $23M −1,644,401 −$23M
MRVI — · CL A 0.03% Exit 0 $5.45 $12M −2,203,651 −$12M
CDNS - Cadence Design System 0.03% Exit 0 $300.46 $10M −33,482 −$10M
IRM - Iron Mtn Del 0.02% Exit 0 $105.11 $9M −90,138 −$9M
AAON — 0.02% Exit 0 $117.68 $9M −75,856 −$9M
BLDR - Builders Firstsource 0.02% Exit 0 $142.94 $9M −60,173 −$9M
ADBE - Adobe 0.02% Exit 0 $444.66 $9M −19,136 −$9M
PK - Park Hotels & Resorts 0.02% Exit 0 $14.07 $7M −514,064 −$7M
BRX - Brixmor Ppty Group 0.01% Exit 0 $27.84 $6M −202,319 −$6M
MGM - Mgm Resorts International 0.01% Exit 0 $34.65 $5M −131,063 −$5M
NDSN - Nordson 0.01% Exit 0 $209.25 $3M −16,268 −$3M
RHP - Ryman Hospitality Pptys 0.01% Exit 0 $104.36 $3M −31,297 −$3M
PCVX - Vaxcyte 0.01% Exit 0 $81.88 $2M −25,000 −$2M
RARE — Exit 0 $42.08 $2M −40,000 −$2M
EWTX - Edgewise Therapeutics Exit 0 $26.70 $2M −60,000 −$2M
WVE - Wave Life Sciences Exit 0 $12.36 $1M −85,000 −$1M
KYMR - Kymera Therapeutics Exit 0 $40.24 $1M −25,000 −$1M
RCKT - Rocket Pharmaceuticals Exit 0 $12.57 $943K −75,000 −$943K
RIVN - Rivian Automotive Exit 0 $13.29 $856K −64,389 −$856K
LFUS - Littelfuse Exit 0 $235.54 $668K −2,836 −$668K
GMAB - Genmab A/S Exit 0 $20.86 $661K −31,691 −$661K
Taboola Exit 0 $3.65 $441K −120,899 −$441K
WDAY - Workday · CL A Exit 0 $257.92 $407K −1,578 −$407K
Janux Therapeutics Exit 0 $53.50 $321K −6,000 −$321K
GPN - Global Pmts Exit 0 $112.00 $112K −1,000 −$112K
FAST - Fastenal Exit 0 $72.73 $32K −440 −$32K

* Reported price is value ÷ shares from the 13F as of period end — not a live market quote. Weight % is each long-equity position ÷ full 13F AUM, so rows may not sum to 100% when the filing includes options or other non-equity (excluded from this table). Share change and $ change are vs 2024 Q4. Click column headers to sort · click New / Hold / Add / Reduce to promote that move type to the top. Exit opens the last-held block below.

Filings history

20 periods · normalized AUM · open a period for holdings

Period Holdings AUM QoQ Form Filed Filing ID
2026 Q2 345 $66.6B +101.2% 13F-HR 8/14/2026 000101791826000067
2026 Q1 326 $33.1B −10.2% 13F-HR 5/15/2026 000101791826000043
2025 Q4 327 $36.9B −2.1% 13F-HR 2/17/2026 000101791826000015
2025 Q3 330 $37.7B +2.2% 13F-HR 11/14/2025 000101791825000059
2025 Q2 306 $36.9B +8.3% 13F-HR 8/14/2025 000101791825000041
2025 Q1 314 $34B −12.0% 13F-HR 5/15/2025 000101791825000031
2024 Q4 316 $38.7B +2.6% 13F-HR 2/14/2025 000101791825000019
2024 Q3 328 $37.7B +8.0% 13F-HR 11/14/2024 000101791824000083
2024 Q2 329 $34.9B −6.9% 13F-HR 8/14/2024 000101791824000013
2024 Q1 332 $37.5B −0.1% 13F-HR 5/15/2024 000101791824000010
2023 Q4 330 $37.5B +9.1% 13F-HR 2/14/2024 000101791824000006
2023 Q3 334 $34.4B −4.7% 13F-HR 11/14/2023 000101791823000018
2023 Q2 343 $36.1B +8.4% 13F-HR 8/14/2023 000101791823000015
2023 Q1 360 $33.3B +11.9% 13F-HR 5/15/2023 000101791823000011
2022 Q4 375 $29.8B −3.8% 13F-HR 2/14/2023 000101791823000006
2022 Q3 370 $31B −0.6% 13F-HR 11/14/2022 000156761922019904
2022 Q2 371 $31.1B −23.6% 13F-HR 8/15/2022 000156761922016144
2022 Q1 388 $40.7B −13.6% 13F-HR 5/13/2022 000156761922010459
2021 Q4 404 $47.1B +6.8% 13F-HR 2/14/2022 000156761922004346
2021 Q3 397 $44.1B 13F-HR 11/12/2021 000156761921019987

About

BAMCO Inc (Baron Capital)

20 processed 13Fs on this site · 2021 Q3–2026 Q2

Entity
BAMCO Inc (Baron Capital)
Notable person
Ron Baron
SEC filing name
BAMCO INC /NY/
Location
New York, NY
All SEC filings
View on sec.gov