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

2021 Q4 2021 Q3 · filed 14 Feb · long equity

TSLA - Tesla Motors 12.99% Reduce −3.7% 5,793,603 $1,057 $6.1B −223,005 +$1.5B
IT - Gartner 3.79% Reduce −2.4% 5,337,296 $334.32 $1.8B −132,337 +$122M
IDXX - Idexx Labs 3.53% Reduce −2.5% 2,527,511 $658.46 $1.7B −65,554 +$52M
CSGP - Costar Group 3.10% Reduce −0.8% 18,498,791 $79.03 $1.5B −140,948 −$142M
MTN - Vail Resorts 3.06% Reduce −0.3% 4,393,280 $327.90 $1.4B −12,681 −$31M
MSCI - MSCI Inc · CL A 2.78% Reduce −1.3% 2,140,588 $612.69 $1.3B −28,964 −$8M
FDS - Factset Resh Sys 2.74% Add +0.3% 2,657,480 $486.01 $1.3B +7,203 +$245M
ACGL - Arch Cap Group 2.03% Add +1.6% 21,532,452 $44.45 $957M +338,285 +$148M
ANSS - Ansys 1.73% Reduce −1.6% 2,033,805 $401.12 $816M −33,049 +$112M
TECH - Bio Techne 1.63% Reduce −0.7% 1,482,953 $517.34 $767M −10,925 +$43M
CHH - Choice Hotels Intl 1.53% Reduce 0.0% 4,630,852 $155.99 $722M −1,138 +$137M
GWRE - Guidewire Software 1.42% Add +2.6% 5,897,971 $113.53 $670M +146,961 −$14M
MTD - Mettler Toledo 1.35% Reduce −1.6% 375,094 $1,697 $637M −6,179 +$111M
RIVN - Rivian Automotive 1.25% New 5,839,998 $100.97 $590M +5,839,998 +$590M
TSM - Taiwan Semiconductor Mfg 1.18% Add +30.4% 4,623,225 $120.31 $556M +1,077,006 +$160M
IRDM - Iridium Communications 1.17% Add +15.2% 13,401,739 $41.29 $553M +1,769,377 +$90M
PENN - Penn Natl Gaming 1.17% Add +2.4% 10,665,535 $51.85 $553M +250,023 −$202M
WST - West Pharmaceutical Svsc 1.17% Reduce −6.1% 1,177,521 $469.01 $552M −76,578 +$20M
SCHW - Schwab Charles 1.16% Reduce 0.0% 6,520,260 $84.10 $548M −85 +$73M
H - Hyatt Hotels · CL A 1.11% Add +1.3% 5,460,700 $95.90 $524M +67,702 +$108M
KNSL - Kinsale Cap Group 1.07% Add +0.4% 2,111,106 $237.89 $502M +7,707 +$162M
MAR - Marriott 1.05% Add +6.6% 2,941,647 $168.98 $497M +181,890 +$63M
TREX — 0.95% Reduce −7.7% 3,308,290 $135.03 $447M −276,308 +$81M
GLPI - Gaming & Leisure Pptys 0.90% Reduce −1.6% 8,750,213 $48.66 $426M −143,799 +$14M
RRR - Red Rock Resorts · CL A 0.88% Reduce −5.1% 7,575,730 $55.01 $417M −404,096 +$8M
MORN - Morningstar 0.88% Reduce 0.0% 1,208,920 $341.99 $413M −499 +$100M
Endava 0.84% Reduce −0.4% 2,356,691 $167.92 $396M −8,574 +$74M
GOOG - Alphabet · CL C 0.71% Reduce −4.0% 115,587 $2,894 $334M −4,843 +$13M
DAY - Ceridian Hcm 0.69% Reduce −0.3% 3,114,547 $104.46 $325M −10,228 −$27M
PRI - Primerica 0.68% Reduce −0.3% 2,085,776 $153.27 $320M −6,528 −$2M
BFAM — 0.67% Add 0.0% 2,511,344 $125.88 $316M +175 −$34M
AMZN - Amazon 0.64% Add +1.5% 90,232 $3,334 $301M +1,306 +$9M
ARE — 0.62% Add +0.1% 1,303,969 $222.96 $291M +1,415 +$42M
SBAC - Sba Communications 0.59% Reduce −9.1% 718,748 $389.02 $280M −71,962 +$18M
SHOP - Shopify · CL A 0.59% Add +31.8% 201,593 $1,377 $278M +48,656 +$70M
GTM - Zoominfo Technologies · CL A 0.59% Add +1.4% 4,301,383 $64.20 $276M +58,186 +$17M
SSNC - SS&C Technologies 0.58% Reduce −4.9% 3,355,371 $81.98 $275M −174,352 +$30M
CNS - Cohen & Steers 0.57% Add +4.7% 2,916,298 $92.51 $270M +130,574 +$36M
VRSK - Verisk Analytics · CL A 0.57% Reduce 0.0% 1,174,750 $228.73 $269M −279 +$33M
EPAM - Epam Sys 0.56% Reduce −1.6% 397,382 $668.45 $266M −6,298 +$35M
SPOT - Spotify Technology S A 0.55% Add +9.7% 1,115,858 $234.03 $261M +98,743 +$32M
SITE - Siteone Landscape Supply 0.54% Reduce −6.0% 1,058,011 $242.28 $256M −67,503 +$32M
BABA - Alibaba Group 0.54% Reduce −1.1% 2,130,954 $118.79 $253M −23,019 −$66M
ICLR - ICON 0.52% Reduce −7.2% 792,531 $309.70 $245M −61,155 +$22M
FND - Floor & Decor · CL A 0.51% Add +10.4% 1,837,283 $130.01 $239M +172,661 +$38M
IBP - Installed Bldg Prods 0.47% Reduce −7.1% 1,590,496 $139.72 $222M −122,105 +$39M
VEEV - Veeva Sys · CL A 0.44% Reduce −0.6% 820,814 $255.48 $210M −4,600 −$28M
DXCM - Dexcom 0.43% Reduce −4.6% 380,888 $536.95 $205M −18,358 −$14M
WIX — 0.43% Reduce −6.4% 1,295,414 $157.79 $204M −88,281 −$67M
DEI - Douglas Emmett 0.42% Reduce −12.2% 5,927,512 $33.50 $199M −822,928 −$15M

Showing top 50 of 383 by value

Exits / last held

not current holdings · last reported size, unchanged · gone vs 2021 Q3

Stock % of portfolio Recent activity Shares Reported price* Value Share change $ change
Acceleron Pharma 0.50% Exit 0 $172.10 $223M −1,292,998 −$223M
Z - Zillow Group · CL C 0.42% Exit 0 $88.14 $186M −2,114,761 −$186M
Golar Lng Bermuda 0.11% Exit 0 $12.97 $49M −3,800,137 −$49M
Hydrofarm Group 0.09% Exit 0 $37.85 $40M −1,059,233 −$40M
OLLI - Ollies Bargain Outlt 0.09% Exit 0 $60.28 $39M −642,800 −$39M
Everbridge 0.07% Exit 0 $151.04 $33M −216,783 −$33M
VNO - Vornado Rlty Tr 0.06% Exit 0 $42.01 $26M −609,684 −$26M
RDY - Dr Reddys Labs 0.06% Exit 0 $65.14 $25M −384,299 −$25M
Coresite Rlty 0.05% Exit 0 $138.54 $23M −168,609 −$23M
BBIO - Bridgebio Pharma 0.05% Exit 0 $46.87 $23M −487,447 −$23M
Tpi Composites 0.04% Exit 0 $33.75 $19M −572,934 −$19M
PDD - Pinduoduo 0.04% Exit 0 $90.67 $19M −205,378 −$19M
BROS - Dutch Bros · CL A 0.04% Exit 0 $43.32 $18M −425,000 −$18M
Holding · CL A 0.04% Exit 0 $10.18 $16M −1,594,823 −$16M
ADPT — 0.03% Exit 0 $33.99 $12M −352,825 −$12M
Acutus Med 0.03% Exit 0 $8.84 $11M −1,255,162 −$11M
Holding 0.02% Exit 0 $9.98 $11M −1,081,671 −$11M
Dd3 Acquisition Ii 0.02% Exit 0 $9.60 $10M −1,033,069 −$10M
Go Acquisition 0.02% Exit 0 $9.81 $7M −715,900 −$7M
Ion Acquisition 2 0.02% Exit 0 $10.02 $7M −680,312 −$7M
BFLY - Butterfly Network 0.01% Exit 0 $10.44 $6M −547,500 −$6M
MNDY - Monday 0.01% Exit 0 $326.23 $4M −12,905 −$4M
PARA - Paramount Group 0.01% Exit 0 $8.99 $3M −302,364 −$3M
Arco Platform · CL A 0.01% Exit 0 $21.70 $3M −120,934 −$3M
I3N - Chart Inds 0.01% Exit 0 $191.08 $2M −11,733 −$2M
WING - Wingstop Exit 0 $163.93 $2M −9,266 −$2M
WELL - Welltower Exit 0 $82.39 $994K −12,064 −$994K
TWST - Twist Bioscience Exit 0 $107.03 $792K −7,400 −$792K
VCEL - Vericel Exit 0 $48.81 $628K −12,865 −$628K
ARRY - Array Technologies Exit 0 $18.51 $548K −29,602 −$548K
Soc Telemed · CL A Exit 0 $2.27 $152K −67,100 −$152K
ALEC - Alector Exit 0 $22.86 $16K −700 −$16K
AIN - Albany Intl · CL A Exit 0 $78.26 $9K −115 −$9K

* 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 2021 Q3. 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