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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 2025Q1 - net new, added, trimmed, exited.
New positions29 names
  • AMTAMERICAN TOWER CORP NEW
    +699,676
    $152.2M
  • PLDPROLOGIS INC.
    +792,536
    $88.6M
  • KRMNKARMAN HLDGS INC
    +2,400,648
    $80.2M
  • G25508CRH PLC
    +566,834
    $49.9M
  • TMHCTAYLOR MORRISON HOME CORP
    +787,616
    $47.3M
  • WINGWINGSTOP INC
    +150,392
    $33.9M
  • WMSADVANCED DRAIN SYS INC DEL
    +307,855
    $33.4M
  • BEKEKE HLDGS INC
    +1,549,042
    $31.1M
  • EXREXTRA SPACE STORAGE INC
    +194,207
    $28.8M
  • LILI AUTO INC
    +919,740
    $23.2M
  • CHDNCHURCHILL DOWNS INC
    +208,427
    $23.1M
  • XPEVXPENG INC
    +852,979
    $17.7M
  • + 17 more…
Added to101 names
  • FIGSFIGS INC
    +27,833,825
    $127.8M
  • WYNNWYNN RESORTS LTD
    +745,404
    $62.2M
  • AMHAMERICAN HOMES 4 RENT
    +1,188,874
    $45.0M
  • H5919CON HLDG AG
    +849,425
    $37.3M
  • PARPAR TECHNOLOGY CORP
    +548,374
    $33.6M
  • RDNTRADNET INC
    +675,000
    $33.6M
  • M2029KBIRKENSTOCK HOLDING PLC
    +665,000
    $30.5M
  • IRTINDEPENDENCE RLTY TR INC
    +1,391,932
    $29.6M
  • HHYATT HOTELS CORP
    +238,174
    $29.2M
  • WELLWELLTOWER INC
    +170,752
    $26.2M
  • EXKEXACT SCIENCES CORP
    +579,714
    $25.1M
  • MPWRMONOLITHIC PWR SYS INC
    +41,302
    $24.0M
  • + 89 more…
Trimmed136 names
  • AKXANSYS INC
    −563,914
    $178.5M
  • EQIXEQUINIX INC
    −152,299
    $124.2M
  • TSLATESLA INC
    −365,676
    $94.8M
  • GDSGDS HLDGS LTD
    −3,605,821
    $91.3M
  • MSFTMICROSOFT CORP
    −212,226
    $79.7M
  • DEIDOUGLAS EMMETT INC
    −4,264,793
    $68.2M
  • DLRDIGITAL RLTY TR INC
    −430,250
    $61.7M
  • ITGARTNER INC
    −144,594
    $60.7M
  • EXPEEXPEDIA GROUP INC
    −319,475
    $53.7M
  • AXONAXON ENTERPRISE INC
    −97,238
    $51.1M
  • TECHBIO-TECHNE CORP
    −861,178
    $50.5M
  • FDSFACTSET RESH SYS INC
    −107,585
    $48.9M
  • + 124 more…
Exited31 names
  • NARIUSDINARI MED INC
    −1,312,528
    $67.0M
  • AZPN1USDASPEN TECHNOLOGY INC
    −253,214
    $63.2M
  • ALTREURALTAIR ENGR INC
    −539,002
    $58.8M
  • IBTAIBOTTA INC
    −756,087
    $49.2M
  • WEXWEX INC
    −203,300
    $35.6M
  • BZKANZHUN LIMITED
    −1,644,401
    $22.7M
  • MRVIMARAVAI LIFESCIENCES HLDGS I
    −2,203,651
    $12.0M
  • CDNSCADENCE DESIGN SYSTEM INC
    −33,482
    $10.1M
  • IRMIRON MTN INC NEW
    −90,138
    $9.5M
  • AAONAAON INC
    −75,856
    $8.9M
  • BLDRBUILDERS FIRSTSOURCE INC
    −60,173
    $8.6M
  • ADBEADOBE SYSTEMS INCORPORATED
    −19,136
    $8.5M
  • + 19 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