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 Q3 · filed 12 Nov · long equity

TSLA - Tesla Motors 10.57% Hold 6,016,608 $775.48 $4.7B
IT - Gartner 3.76% Hold 5,469,633 $303.88 $1.7B
IDXX - Idexx Labs 3.65% Hold 2,593,065 $621.90 $1.6B
CSGP - Costar Group 3.63% Hold 18,639,739 $86.06 $1.6B
MTN - Vail Resorts 3.33% Hold 4,405,961 $334.05 $1.5B
MSCI - MSCI Inc · CL A 2.99% Hold 2,169,552 $608.34 $1.3B
FDS - Factset Resh Sys 2.37% Hold 2,650,277 $394.78 $1B
ACGL - Arch Cap Group 1.83% Hold 21,194,167 $38.18 $809M
PENN - Penn Natl Gaming 1.71% Hold 10,415,512 $72.46 $755M
TECH - Bio Techne 1.64% Hold 1,493,878 $484.57 $724M
ANSS - Ansys 1.59% Hold 2,066,854 $340.45 $704M
GWRE - Guidewire Software 1.55% Hold 5,751,010 $118.87 $684M
CHH - Choice Hotels Intl 1.33% Hold 4,631,990 $126.37 $585M
WST - West Pharmaceutical Svsc 1.21% Hold 1,254,099 $424.54 $532M
MTD - Mettler Toledo 1.19% Hold 381,273 $1,377 $525M
SCHW - Schwab Charles 1.08% Hold 6,520,345 $72.84 $475M
IRDM - Iridium Communications 1.05% Hold 11,632,362 $39.85 $464M
MAR - Marriott 0.98% Hold 2,759,757 $157.33 $434M
H - Hyatt Hotels · CL A 0.94% Hold 5,392,998 $77.10 $416M
GLPI - Gaming & Leisure Pptys 0.93% Hold 8,894,012 $46.32 $412M
RRR - Red Rock Resorts · CL A 0.93% Hold 7,979,826 $51.22 $409M
TSM - Taiwan Semiconductor Mfg 0.90% Hold 3,546,219 $111.65 $396M
TREX — 0.83% Hold 3,584,598 $101.93 $365M
DAY - Ceridian Hcm 0.80% Hold 3,124,775 $112.62 $352M
BFAM — 0.79% Hold 2,511,169 $139.42 $350M
KNSL - Kinsale Cap Group 0.77% Hold 2,103,399 $161.70 $340M
PRI - Primerica 0.73% Hold 2,092,304 $153.63 $321M
Endava 0.73% Hold 2,365,265 $135.85 $321M
GOOG - Alphabet · CL C 0.73% Hold 120,430 $2,665 $321M
BABA - Alibaba Group 0.72% Hold 2,153,973 $148.05 $319M
MORN - Morningstar 0.71% Hold 1,209,419 $259.03 $313M
AMZN - Amazon 0.66% Hold 88,926 $3,285 $292M
WIX — 0.61% Hold 1,383,695 $195.97 $271M
Z - Zillow Group · CL A 0.61% Hold 3,021,287 $88.58 $268M
SBAC - Sba Communications 0.59% Hold 790,710 $330.57 $261M
RNG - Ringcentral · CL A 0.59% Hold 1,199,489 $217.50 $261M
GTM - Zoominfo Technologies · CL A 0.59% Hold 4,243,197 $61.19 $260M
ARE — 0.56% Hold 1,302,554 $191.07 $249M
SSNC - SS&C Technologies 0.55% Hold 3,529,723 $69.40 $245M
VEEV - Veeva Sys · CL A 0.54% Hold 825,414 $288.17 $238M
VRSK - Verisk Analytics · CL A 0.53% Hold 1,175,029 $200.27 $235M
CNS - Cohen & Steers 0.53% Hold 2,785,724 $83.77 $233M
EPAM - Epam Sys 0.52% Hold 403,680 $570.48 $230M
SPOT - Spotify Technology S A 0.52% Hold 1,017,115 $225.34 $229M
SITE - Siteone Landscape Supply 0.51% Hold 1,125,514 $199.47 $225M
ICLR - ICON 0.51% Hold 853,686 $262.02 $224M
Acceleron Pharma 0.50% Hold 1,292,998 $172.10 $223M
DXCM - Dexcom 0.49% Hold 399,246 $546.86 $218M
DEI - Douglas Emmett 0.48% Hold 6,750,440 $31.61 $213M
SHOP - Shopify · CL A 0.47% Hold 152,937 $1,356 $207M

Showing top 50 of 391 by value

* 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). Click column headers to sort · click New / Hold / Add / Reduce to promote that move type to the top.

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