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BAMCO Inc (Baron Capital) Ron Baron

New York, NY 20 processed 13Fs on this site, 2021 Q3 to 2026 Q2

  • $66.6B
  • 345 holdings
  • 2026 Q2
  • +101.2% QoQ
  • Top 5 52.4%

Portfolio

2026 Q2, filed 8/14/2026, top 12 of 345 holdings

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

2022 Q1 2021 Q4, filed 13 May, long equity only

TSLA, Tesla 15.33%, was 12.99% Add +0.1% 5,797,583 $1,078 $6.2B +3,980 +$125M
IT, Gartner 3.85% Reduce −1.2% 5,274,931 $297.46 $1.6B −62,365 −$215M
IDXX, Idexx Laboratories 3.33%, was 3.53% Reduce −1.9% 2,480,174 $547.06 $1.4B −47,337 −$307M
CSGP, CoStar Group 3.08% Add +1.9% 18,849,173 $66.61 $1.3B +350,382 −$206M
MTN, Vail Resorts 2.95% Add +5.3% 4,625,849 $260.27 $1.2B +232,569 −$237M
FDS, FactSet 2.85%, was 2.74% Add +0.6% 2,674,376 $434.15 $1.2B +16,896 −$130M
MSCI 2.73% Add +3.2% 2,210,016 $502.88 $1.1B +69,428 −$200M
ACGL, Arch Capital Group 2.56% Reduce −0.1% 21,506,340 $48.42 $1B −26,112 +$84M
CHH, Choice Hotels International 1.61% Reduce −0.1% 4,624,466 $141.76 $656M −6,386 −$67M
TECH, Bio Techne 1.56%, was 1.63% Reduce −0.9% 1,469,118 $433.04 $636M −13,835 −$131M
ANSS, Ansys 1.54%, was 1.73% Reduce −2.9% 1,974,782 $317.65 $627M −59,023 −$189M
IRDM, Iridium Communications 1.44%, was 1.17% Add +8.4% 14,522,520 $40.32 $586M +1,120,781 +$32M
GWRE, Guidewire Software 1.35%, was 1.42% Reduce −1.4% 5,814,960 $94.62 $550M −83,011 −$119M
SCHW, Charles Schwab 1.34% Reduce −0.3% 6,497,758 $84.31 $548M −22,502 −$528K
H, Hyatt Hotels 1.28% Reduce −0.2% 5,449,957 $95.45 $520M −10,743 −$3.5M
MTD, Mettler-Toledo 1.23%, was 1.35% Reduce −2.3% 366,284 $1,373 $503M −8,810 −$134M
KNSL, Kinsale Cap Group 1.18%, was 1.07% Add +0.1% 2,114,205 $228.02 $482M +3,099 −$20M
WST, West Pharmaceutical Services 1.18% Reduce −0.5% 1,171,667 $410.71 $481M −5,854 −$71M
TSM, Taiwan Semiconductor 1.16%, was 1.18% Reduce −2.0% 4,528,804 $104.26 $472M −94,421 −$84M
MAR, Marriott 1.12% Reduce −1.9% 2,886,857 $157.70 $455M −54,790 −$42M
PENN, Penn National Gaming 1.11%, was 1.17% Reduce −0.5% 10,616,332 $42.42 $450M −49,203 −$103M
GLPI, Gaming & Leisure Properties 1.03%, was 0.90% Add +2.5% 8,968,592 $46.93 $421M +218,379 −$4.9M
RRR, Red Rock Resorts 0.94%, was 0.88% Add +3.8% 7,865,999 $48.56 $382M +290,269 −$35M
BFAM 0.82% Reduce −0.1% 2,509,475 $132.69 $333M −1,869 +$17M
MORN, Morningstar 0.78%, was 0.88% Reduce −3.6% 1,165,415 $273.17 $318M −43,505 −$95M
Endava 0.75%, was 0.84% Reduce −2.1% 2,307,653 $133.03 $307M −49,038 −$89M
PRI, Primerica 0.69% Reduce −1.2% 2,060,057 $136.82 $282M −25,719 −$38M
SPOT, Spotify 0.66%, was 0.55% Add +59.0% 1,774,545 $151.02 $268M +658,687 +$6.8M
CNS, Cohen & Steers 0.65%, was 0.57% Add +5.8% 3,085,969 $85.89 $265M +169,671 −$4.7M
AMZN, Amazon 0.64% Reduce −11.3% 80,056 $3,260 $261M −10,176 −$40M
GTM, Zoominfo Technologies 0.64%, was 0.59% Add +1.4% 4,362,526 $59.74 $261M +61,143 −$16M
RIVN, Rivian Automotive 0.64%, was 1.25% Reduce −7.9% 5,375,789 $48.29 $260M −464,209 −$330M
ARE 0.62% Reduce −3.9% 1,253,641 $201.25 $252M −50,328 −$38M
VRSK, Verisk 0.61% Reduce −1.4% 1,158,380 $214.63 $249M −16,370 −$20M
BABA, Alibaba 0.61%, was 0.54% Add +6.4% 2,268,156 $108.80 $247M +137,202 −$6.4M
SHOP, Shopify 0.59% Add +75.7% 354,147 $675.96 $239M +152,554 −$38M
SSNC, SS&C Technologies 0.57%, was 0.58% Reduce −8.0% 3,086,921 $75.02 $232M −268,450 −$43M
GOOG, Alphabet Class C 0.56%, was 0.71% Reduce −28.8% 82,312 $2,793 $230M −33,275 −$105M
TREX 0.53% Add +0.3% 3,317,449 $65.33 $217M +9,159 −$230M
BYD, Boyd Gaming 0.53%, was 0.42% Add +8.8% 3,261,996 $65.78 $215M +265,156 +$18M
DAY, Ceridian HCM 0.52%, was 0.69% Reduce −0.3% 3,103,832 $68.36 $212M −10,715 −$113M
SBAC, SBA Communications 0.51%, was 0.59% Reduce −16.4% 600,665 $344.10 $207M −118,083 −$73M
Aspen Technology 0.51% Reduce −0.2% 1,245,459 $165.37 $206M −2,493 +$16M
DEI, Douglas Emmett 0.49%, was 0.42% Add 0.0% 5,928,112 $33.42 $198M +600 −$454K
DXCM, DexCom 0.46% Reduce −2.9% 369,969 $511.60 $189M −10,919 −$15M
ICLR, Icon 0.46%, was 0.52% Reduce −2.7% 771,031 $243.22 $188M −21,500 −$58M
EFOR, Asgn 0.46% Hold 1,604,458 $116.71 $187M — —
SITE, Siteone Landscape Supply 0.42%, was 0.54% Reduce 0.0% 1,057,533 $161.69 $171M −478 −$85M
VEEV, Veeva Systems 0.42%, was 0.44% Reduce −2.4% 801,065 $212.46 $170M −19,749 −$40M
TRU, Transunion 0.41% Reduce −1.8% 1,614,406 $103.34 $167M −29,802 −$28M

Showing top 50 of 375 by value

Exits / last held

Gone since 2021 Q4, shown at their last reported size.

Stock % of portfolio Recent activity Shares Reported price* Value Share change $ change
NTRA, Natera 0.14% Exit 0 $93.39 $65M −693,462 −$65M
Kanzhun 0.09% Exit 0 $34.88 $43M −1,221,418 −$43M
New Frontier Health 0.06% Exit 0 $11.46 $29M −2,518,296 −$29M
BHVN, Biohaven 0.06% Exit 0 $137.81 $27M −197,980 −$27M
Farfetch 0.05% Exit 0 $33.43 $23M −702,664 −$23M
MGM Growth Properties 0.05% Exit 0 $40.85 $22M −526,572 −$22M
Opendoor Technologies 0.04% Exit 0 $14.61 $20M −1,364,088 −$20M
Mirati Therapeutics 0.04% Exit 0 $146.69 $19M −126,322 −$19M
FOUR, Shift4 Payments 0.03% Exit 0 $57.93 $14M −250,000 −$14M
Digitalbridge Group 0.03% Exit 0 $8.33 $12M −1,441,050 −$12M
Hashicorp 0.02% Exit 0 $91.04 $11M −125,000 −$11M
JBG Smith Properties 0.02% Exit 0 $28.71 $11M −374,620 −$11M
Splunk 0.02% Exit 0 $115.72 $9.4M −81,463 −$9.4M
Myt Netherlands Parent 0.02% Exit 0 $21.21 $9.1M −430,665 −$9.1M
Esco Technologies 0.02% Exit 0 $89.99 $7.8M −86,600 −$7.8M
RXRX 0.01% Exit 0 $17.13 $7M −408,563 −$7M
DV, Doubleverify 0.01% Exit 0 $33.28 $6.1M −184,516 −$6.1M
Viant Technology 0.01% Exit 0 $9.71 $5.3M −542,985 −$5.3M
Ihs Markit 0.01% Exit 0 $132.93 $4.5M −33,649 −$4.5M
AXGN, Axogen 0.01% Exit 0 $9.37 $4.1M −435,527 −$4.1M
TOST, Toast 0.01% Exit 0 $34.71 $4M −114,485 −$4M
ACHR, Archer Aviation 0.01% Exit 0 $6.04 $4M −657,000 −$4M
OLN, Olink Holding Ab 0.01% Exit 0 $18.20 $3.8M −210,445 −$3.8M
ASND, Ascendis Pharma A/s 0.01% Exit 0 $134.54 $2.8M −20,500 −$2.8M
Niu Technologies 0.01% Exit 0 $16.11 $2.6M −161,592 −$2.6M
IQV, IQVIA — Exit 0 $282.19 $1.7M −6,081 −$1.7M
iShares Trust — Exit 0 $293.08 $1.3M −4,521 −$1.3M
ARVN, Arvinas — Exit 0 $82.11 $1.3M −16,100 −$1.3M
Laird Superfood — Exit 0 $13.04 $1.3M −100,000 −$1.3M
PATH, Uipath — Exit 0 $43.13 $1.3M −30,000 −$1.3M
BEAM, Beam Therapeutics — Exit 0 $79.66 $1.3M −15,717 −$1.3M
INTC, Intellia Therapeutics — Exit 0 $118.27 $1.2M −10,400 −$1.2M
ZNTL, Zentalis Pharmaceuticals — Exit 0 $84.08 $1M −12,000 −$1M
STZ, Constellation Brands — Exit 0 $250.85 $962K −3,835 −$962K
Semler Scientific — Exit 0 $91.68 $960K −10,471 −$960K
PTGX, Protagonist Therapeutics — Exit 0 $34.19 $889K −26,000 −$889K
IAC, IAC Interactivecorp — Exit 0 $130.69 $809K −6,190 −$809K
Goodrx — Exit 0 $32.68 $670K −20,500 −$670K
MRNA, Moderna — Exit 0 $253.95 $643K −2,532 −$643K
VICI, VICI Properties — Exit 0 $30.15 $374K −12,405 −$374K
Riskified — Exit 0 $7.86 $220K −28,000 −$220K
Z, Zillow — Exit 0 $62.08 $64K −1,031 −$64K
PINS, Pinterest — Exit 0 $36.09 $45K −1,247 −$45K
ZM, Zoom Video — Exit 0 $181.82 $26K −143 −$26K

Weight bar: held both quarters added sold at this quarter’s reported price

* 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). Share change and $ change are vs 2021 Q4. Click a column header to sort, or New, Hold, Add or Reduce to bring those moves to the top. Exit opens the last-held block below.

Filings history

20 periods, with AUM normalized

Period Holds 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 to 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