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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 2025Q2 - net new, added, trimmed, exited.
New positions20 names
  • HNGEHINGE HEALTH INC
    +945,762
    $48.9M
  • BXPBOSTON PROPERTIES INC
    +571,810
    $38.6M
  • PONYPONY AI INC
    +1,684,095
    $22.2M
  • ASICATEGRITY SPECIALTY IN CO HO
    +642,230
    $13.8M
  • SMASMARTSTOP SELF STORAG REIT I
    +361,372
    $13.1M
  • IRMIRON MTN INC NEW
    +107,524
    $11.0M
  • HSTHOST HOTELS & RESORTS INC
    +582,925
    $9.0M
  • VICIVICI PPTYS INC
    +242,348
    $7.9M
  • BLDRBUILDERS FIRSTSOURCE INC
    +57,189
    $6.7M
  • VOYGVOYAGER TECHNOLOGIES INC
    +120,000
    $4.7M
  • ELMEWASHINGTON REAL ESTATE INVT
    +236,975
    $3.8M
  • UDRUDR INC
    +88,575
    $3.6M
  • + 8 more…
Added to130 names
  • IBKRINTERACTIVE BROKERS GROUP IN
    +3,284,457
    $182.0M
  • TOLTOLL BROTHERS INC
    +611,523
    $69.8M
  • IOTSAMSARA INC
    +1,632,626
    $64.9M
  • MSCIMSCI INC
    +98,680
    $56.9M
  • CSGPCOSTAR GROUP INC
    +647,413
    $52.1M
  • LLYLILLY ELI & CO
    +65,795
    $51.3M
  • ABNBAIRBNB INC
    +364,499
    $48.2M
  • WYNNWYNN RESORTS LTD
    +482,570
    $45.2M
  • EQIXEQUINIX INC
    +53,130
    $42.3M
  • CHHCHOICE HOTELS INTL INC
    +317,618
    $40.3M
  • DKNGDRAFTKINGS INC NEW
    +929,997
    $39.9M
  • SPOTSPOTIFY TECHNOLOGY S A
    +49,367
    $37.9M
  • + 118 more…
Trimmed116 names
  • TSLATESLA INC
    −1,194,335
    $379.4M
  • AKXANSYS INC
    −657,758
    $231.0M
  • BABAALIBABA GROUP HLDG LTD
    −574,800
    $65.2M
  • NETCLOUDFLARE INC
    −328,409
    $64.3M
  • AAPLAPPLE INC
    −308,395
    $63.3M
  • VRTVERTIV HOLDINGS CO
    −396,003
    $50.9M
  • MTDMETTLER TOLEDO INTERNATIONAL
    −41,992
    $49.3M
  • ITGARTNER INC
    −118,848
    $48.0M
  • DAYCERIDIAN HCM HLDG INC
    −709,940
    $39.3M
  • LVSLAS VEGAS SANDS CORP
    −735,372
    $32.0M
  • AMHAMERICAN HOMES 4 RENT
    −857,687
    $30.9M
  • TDGTRANSDIGM GROUP INC
    −20,000
    $30.4M
  • + 104 more…
Exited28 names
  • UTZUTZ BRANDS INC
    −3,250,000
    $45.8M
  • JDJD.COM INC
    −873,239
    $35.9M
  • AVBAVALONBAY CMNTYS INC
    −165,285
    $35.5M
  • UNHUNITEDHEALTH GROUP INC
    −56,890
    $29.8M
  • EXREXTRA SPACE STORAGE INC
    −194,207
    $28.8M
  • CHDNCHURCHILL DOWNS INC
    −208,427
    $23.1M
  • BASECOUCHBASE INC
    −1,395,158
    $22.0M
  • KRCKILROY RLTY CORP
    −659,304
    $21.6M
  • LENLENNAR CORP
    −184,914
    $21.2M
  • EXPEEXPEDIA GROUP INC
    −110,979
    $18.7M
  • DNUTKRISPY KREME INC
    −3,645,959
    $17.9M
  • ANETARISTA NETWORKS INC
    −184,499
    $14.3M
  • + 16 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