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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 2024Q1 - net new, added, trimmed, exited.
New positions17 names
  • COOCOOPER COS INC
    +943,282
    $95.7M
  • INTAINTAPP INC
    +2,583,231
    $88.6M
  • MASIMASIMO CORP
    +345,800
    $50.8M
  • TMETENCENT MUSIC ENTMT GROUP
    +3,651,224
    $40.9M
  • ALABASTERA LABS INC
    +500,000
    $37.1M
  • EXPOEXPONENT INC
    +313,262
    $25.9M
  • RDDTREDDIT INC
    +300,000
    $14.8M
  • CDNACAREDX INC
    +1,229,900
    $13.0M
  • PKPARK HOTELS & RESORTS INC
    +318,724
    $5.6M
  • IRTCIRHYTHM TECHNOLOGIES INC
    +45,000
    $5.2M
  • MACMACERICH CO
    +255,558
    $4.4M
  • TPHTRI POINTE HOMES INC
    +85,220
    $3.3M
  • + 5 more…
Added to102 names
  • SPOTSPOTIFY TECHNOLOGY S A
    +190,931
    $50.4M
  • PCORPROCORE TECHNOLOGIES INC
    +441,256
    $36.3M
  • AVGOBROADCOM INC
    +23,796
    $31.5M
  • VMCVULCAN MATLS CO
    +82,943
    $22.6M
  • CWANCLEARWATER ANALYTICS HLDGS I
    +1,262,150
    $22.3M
  • INDIINDIE SEMICONDUCTOR INC
    +3,121,255
    $22.1M
  • MSFTMICROSOFT CORP
    +46,915
    $19.7M
  • RHRH
    +53,395
    $18.6M
  • G98239XP INC
    +681,273
    $17.5M
  • HLTHILTON WORLDWIDE HLDGS INC
    +75,102
    $16.0M
  • NCNONCINO INC
    +421,500
    $15.8M
  • VKTXVIKING THERAPEUTICS INC
    +183,192
    $15.0M
  • + 90 more…
Trimmed153 names
  • VRTVERTIV HOLDINGS CO
    −1,900,000
    $155.2M
  • TSMTAIWAN SEMICONDUCTOR MFG LTD
    −1,096,791
    $149.2M
  • VACMARRIOTT VACATIONS WORLDWIDE
    −1,305,679
    $140.7M
  • IDXXIDEXX LABS INC
    −195,066
    $105.3M
  • NVDANVIDIA CORPORATION
    −110,715
    $100.0M
  • PENNPENN NATL GAMING INC
    −4,789,345
    $87.2M
  • TSLATESLA INC
    −490,694
    $86.3M
  • ITGARTNER INC
    −175,459
    $83.6M
  • AKXANSYS INC
    −231,030
    $80.2M
  • AXNX*AXONICS INC
    −1,111,398
    $76.7M
  • IRDMIRIDIUM COMMUNICATIONS INC
    −2,120,000
    $55.5M
  • FNDFLOOR & DECOR HLDGS INC
    −425,360
    $55.1M
  • + 141 more…
Exited15 names
  • 216648COOPER COS INC
    −251,098
    $95.0M
  • MKTXMARKETAXESS HLDGS INC
    −67,596
    $19.8M
  • G21810CLARIVATE PLC
    −2,000,000
    $18.5M
  • G85158STONECO LTD
    −626,634
    $11.3M
  • QLYSQUALYS INC
    −46,222
    $9.1M
  • G4740BICHOR HOLDINGS
    −231,384
    $7.8M
  • EPAMEPAM SYS INC
    −25,263
    $7.5M
  • GPCRSTRUCTURE THERAPEUTICS INC
    −118,333
    $4.8M
  • VTRVENTAS INC
    −62,893
    $3.1M
  • HUMHUMANA INC
    −5,425
    $2.5M
  • VGTVANGUARD WORLD FDS
    −3,396
    $1.6M
  • MRNAMODERNA INC
    −7,500
    $746K
  • + 3 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