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Built from publicly disclosed institutional and insider activity. Informational purposes only - not investment advice.OpenStocks · v0.1
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  1. Home/
  2. Super Investors/
  3. Ron Baron (Baron Capital / BAMCO)
  • Overview
  • Portfolio327
  • Performance40Q
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  • Activity12k
  • News
Asset Manager · CIK 0001017918

Ron Baron

Baron Capital / BAMCO
Share
  • Large Fund

Ron Baron runs Baron Capital / BAMCO, an asset manager overseeing $36.91B in disclosed equity holdings (SEC CIK 0001017918). The latest portfolio (2025Q4) discloses 327 positions across 9 sectors, with the largest positions in TSLA, ARCH CAP GROUP LTD and MSCI. On a mark-to-market basis the tracked portfolio has returned 13.0% over the past year. OpenStocks tracks 40 consecutive quarterly snapshots for this manager — every position change, new entry, and exit is logged below.

Track Ron's filingsView holdings↓
Portfolio
$36.91B
Positions
327
Quarter
2025Q4
Filings tracked
40
1Y+13.0%Since filing+110.9%Full performance →
Quarter
2025Q42025Q32025Q22025Q12024Q42024Q32024Q22024Q12023Q42023Q32023Q22023Q1
Capital flow per quarter
BuysSellsNet
+$3.88B+$1.94B$0-$1.94B-$3.88B'22Q1'22Q2'22Q3'22Q4'23Q1'23Q2'23Q3'23Q4'24Q1'24Q2'24Q3'24Q4'25Q1'25Q2'25Q3'25Q4
Latest · 2025Q4
-$342M
Lifetime buys
$25.46B
Lifetime sells
$29.55B

Quarter activity

What changed in 2025Q4 - net new, added, trimmed, exited.
New positions34 names
  • LLYVKLIBERTY LIVE HOLDINGS INC
    +1,613,666
    $134.2M
  • SKYSKYLINE CHAMPION CORPORATION
    +725,542
    $61.3M
  • WAYWAYSTAR HLDG CORP
    +1,393,634
    $45.6M
  • CWSTCASELLA WASTE SYS INC
    +446,242
    $43.7M
  • FBINFORTUNE BRANDS HOME & SEC IN
    +773,799
    $38.7M
  • RKTROCKET COS INC
    +1,398,360
    $27.1M
  • GLIBKGCI LIBERTY INC
    +681,440
    $25.4M
  • G2717CCUSHMAN AND WAKEFIELD LTD
    +1,481,285
    $24.0M
  • CVCOCAVCO INDS INC DEL
    +37,078
    $21.9M
  • NPNEPTUNE INS HLDGS INC
    +708,728
    $20.7M
  • ARQTARCUTIS BIOTHERAPEUTICS INC
    +504,700
    $14.7M
  • BLLNBILLIONTOONE INC
    +170,000
    $13.9M
  • + 22 more…
Added to122 names
  • FDSFACTSET RESH SYS INC
    +1,069,786
    $310.4M
  • MSCIMSCI INC
    +361,630
    $207.5M
  • CHHCHOICE HOTELS INTL INC
    +2,026,679
    $193.1M
  • VTRVENTAS INC
    +1,048,958
    $81.2M
  • M2029KBIRKENSTOCK HOLDING PLC
    +1,612,236
    $65.9M
  • BNBROOKFIELD CORP
    +1,233,637
    $56.6M
  • ABNBAIRBNB INC
    +301,536
    $40.9M
  • NOVTNOVANTA INC
    +309,869
    $36.9M
  • AMZNAMAZON COM INC
    +146,847
    $33.9M
  • HTFLHEARTFLOW INC
    +1,066,371
    $31.1M
  • H5919CON HLDG AG
    +658,933
    $30.6M
  • AXONAXON ENTERPRISE INC
    +49,199
    $27.9M
  • + 110 more…
Trimmed121 names
  • GLPIGAMING & LEISURE PPTYS INC
    −3,285,200
    $146.8M
  • EXKEXACT SCIENCES CORP
    −1,184,503
    $120.3M
  • MTNVAIL RESORTS INC
    −892,764
    $118.6M
  • CNSCOHEN & STEERS INC
    −1,563,311
    $98.1M
  • MTDMETTLER TOLEDO INTERNATIONAL
    −65,018
    $90.6M
  • VRTVERTIV HOLDINGS CO
    −525,071
    $85.1M
  • TECHBIO-TECHNE CORP
    −1,288,824
    $75.8M
  • G0450AARCH CAP GROUP LTD
    −772,150
    $74.1M
  • PRIPRIMERICA INC
    −275,697
    $71.2M
  • IDXXIDEXX LABS INC
    −86,088
    $58.2M
  • KTOSKRATOS DEFENSE & SEC SOLUTIO
    −723,116
    $54.9M
  • TTDTHE TRADE DESK INC
    −1,298,598
    $49.3M
  • + 109 more…
Exited37 names
  • LLYVK*LIBERTY MEDIA CORP DEL
    −1,458,910
    $141.5M
  • TREXTREX CO INC
    −1,589,735
    $82.1M
  • ITGRINTEGER HLDGS CORP
    −766,055
    $79.2M
  • DUOLDUOLINGO INC
    −243,708
    $78.4M
  • VNOVORNADO RLTY TR
    −1,408,487
    $57.1M
  • IRMIRON MTN INC NEW
    −436,831
    $44.5M
  • DAYCERIDIAN HCM HLDG INC
    −523,064
    $36.0M
  • DHID R HORTON INC
    −199,717
    $33.8M
  • BEKEKE HLDGS INC
    −1,756,357
    $33.4M
  • JBIJANUS INTERNATIONAL GROUP IN
    −2,750,000
    $27.1M
  • IRTINDEPENDENCE RLTY TR INC
    −1,467,193
    $24.0M
  • METCRAMACO RES INC
    −623,058
    $20.7M
  • + 25 more…

Recent transactions

Last 20 moves
ADD
Ron Baron (Baron Capital / BAMCO) added to PEN
PENUMBRA INC
+426
~$310.91 · 2025Q4
2026-02-17
SOLD
Ron Baron (Baron Capital / BAMCO) exited ARE
ALEXANDRIA REAL ESTATE EQ IN
−20,104
~$83.34 · 2025Q4
2026-02-17
ADD
Ron Baron (Baron Capital / BAMCO) added to AXON
AXON ENTERPRISE INC
+49,199
~$567.93 · 2025Q4
2026-02-17
ADD
Ron Baron (Baron Capital / BAMCO) added to CHH
CHOICE HOTELS INTL INC
+2,026,679
~$95.26 · 2025Q4
2026-02-17
SOLD
Ron Baron (Baron Capital / BAMCO) exited CDTX
CIDARA THERAPEUTICS INC
−17,500
~$95.76 · 2025Q4
2026-02-17
SOLD
Ron Baron (Baron Capital / BAMCO) exited CYH
COMMUNITY HEALTH SYS INC NEW
−100
~$3.21 · 2025Q4
2026-02-17
SOLD
Ron Baron (Baron Capital / BAMCO) exited DUOL
DUOLINGO INC
−243,708
~$321.84 · 2025Q4
2026-02-17
SOLD
Ron Baron (Baron Capital / BAMCO) exited FRPT
FRESHPET INC
−38,628
~$55.11 · 2025Q4
2026-02-17
SOLD
Ron Baron (Baron Capital / BAMCO) exited IBN
ICICI BANK LIMITED
−11,708
~$30.23 · 2025Q4
2026-02-17
ADD
Ron Baron (Baron Capital / BAMCO) added to M6191J100
JFROG LTD
+244,450
~$62.46 · 2025Q4
2026-02-17
TRIM
Ron Baron (Baron Capital / BAMCO) trimmed KTOS
KRATOS DEFENSE & SEC SOLUTIO
−723,116
~$75.91 · 2025Q4
2026-02-17
SOLD
Ron Baron (Baron Capital / BAMCO) exited LLYVK*
LIBERTY MEDIA CORP DEL
−1,458,910
~$96.97 · 2025Q4
2026-02-17
ADD
Ron Baron (Baron Capital / BAMCO) added to MIR
MIRION TECHNOLOGIES INC
+150,000
~$23.42 · 2025Q4
2026-02-17
TRIM
Ron Baron (Baron Capital / BAMCO) trimmed S
SENTINELONE INC
−332,529
~$15.00 · 2025Q4
2026-02-17
TRIM
Ron Baron (Baron Capital / BAMCO) trimmed TSLA
TESLA INC
−20,139
~$449.72 · 2025Q4
2026-02-17
TRIM
Ron Baron (Baron Capital / BAMCO) trimmed TW
TRADEWEB MKTS INC
−10,773
~$107.54 · 2025Q4
2026-02-17
SOLD
Ron Baron (Baron Capital / BAMCO) exited UDR
UDR INC
−88,575
~$37.26 · 2025Q4
2026-02-17
TRIM
Ron Baron (Baron Capital / BAMCO) trimmed WYNN
WYNN RESORTS LTD
−118,268
~$120.33 · 2025Q4
2026-02-17
NEW
Ron Baron (Baron Capital / BAMCO) opened a new position in SMMD
ISHARES TR
+51,896
~$74.94 · 2025Q4
2026-02-17
SOLD
Ron Baron (Baron Capital / BAMCO) exited JBI
JANUS INTERNATIONAL GROUP IN
−2,750,000
~$9.87 · 2025Q4
2026-02-17