BAMCO INC /NY/

NEW YORK, NY · CIK 1017918 · 13F filing filed 2026-08-14

SEC-registered investment adviser since 1987 · corporation

Assets managed$39.5bn
Staff221 · 41 in investment roles
Main clients (by assets)Mutual funds and ETFs 99%, Private funds 1%
Form ADV · 2026-05-27SEC adviser record

Legal entityBAMCO, INC. (US)

$66.6bn reported value +101.2% vs Q1 2026

345positions

60.9%in top 10

54 new 117 added 154 reduced 35 sold out vs Q1 2026

This report includes the holdings of 2 other managers that share the investment decisions:

VOYA INVESTMENTS, LLC – reports through this filing
BARON CAPITAL MANAGEMENT INC /NY/ – no 13F of its own this quarter

Shares in two reports are counted once in each security's totals.

Holdings, Q2 2026

The small lines show how much was held over the last 4 quarters (adjusted for stock splits).

#	Security	Ticker	Shares	Value	% of portfolio	Change	Shares change
1	SPACE EXPLORATION TECHN CORP CLASS A COM STK SPCX	SPCX	145,775,147	$24.9bn37.38%	37.38%	New
2	TESLA INC COM TSLA	TSLA	12,524,752	$5.3bn7.90%	7.90%	Added +591.2k	+591,243 5.0%
3	MSCI INC COM MSCI	MSCI	3,211,753	$1.8bn2.70%	2.70%	Added +512.4k	+512,364 19.0%
4	ARCH CAP GROUP LTD ORD ACGL	ACGL	15,872,450	$1.5bn2.31%	2.31%	Reduced -837.3k	-837,309 -5.0%
5	HYATT HOTELS CORP COM CL A H	H	7,279,087	$1.4bn2.12%	2.12%	Added +937.4k	+937,414 14.8%
6	SHOPIFY INC CL A SUB VTG SHS SHOP	SHOP	11,155,546	$1.3bn1.91%	1.91%	Added +6.4m	+6,437,316 136.4%
7	SPOTIFY TECHNOLOGY S A SHS SPOT	SPOT	2,433,114	$1.1bn1.68%	1.68%	Added +1.1m	+1,113,589 84.4%
8	GUIDEWIRE SOFTWARE INC COM GWRE	GWRE	8,994,456	$1.1bn1.66%	1.66%	Added +2.4m	+2,397,003 36.3%
9	SCHWAB CHARLES CORP COM SCHW	SCHW	11,655,694	$1.1bn1.61%	1.61%	Added +4.2m	+4,191,378 56.1%
10	RED ROCK RESORTS INC CL A RRR	RRR	16,391,131	$1.1bn1.60%	1.60%	Added +3.0m	+2,978,285 22.2%
11	IDEXX LABS INC COM IDXX	IDXX	1,976,778	$1.0bn1.56%	1.56%	Added +343.4k	+343,411 21.0%
12	CHOICE HOTELS INTL INC COM CHH	CHH	9,328,354	$1.0bn1.54%	1.54%	Added +1.6m	+1,637,860 21.3%
13	GARTNER INC COM IT	IT	7,601,009	$985.2m1.48%	1.48%	Added +1.7m	+1,683,393 28.4%
14	FACTSET RESH SYS INC COM FDS	FDS	4,200,856	$966.5m1.45%	1.45%	Added +444.3k	+444,269 11.8%
15	VAIL RESORTS INC COM MTN	MTN	6,536,697	$890.0m1.34%	1.34%	Added +1.5m	+1,493,164 29.6%
16	KINSALE CAP GROUP INC COM KNSL	KNSL	2,663,958	$878.6m1.32%	1.32%	Added +636.2k	+636,193 31.4%
17	VERISK ANALYTICS INC COM VRSK	VRSK	4,702,605	$844.3m1.27%	1.27%	Added +2.2m	+2,190,629 87.2%
18	BIRKENSTOCK HOLDING PLC COM SHS BIRK	BIRK	14,739,609	$634.2m0.95%	0.95%	Added +5.4m	+5,373,541 57.4%
19	FIGS INC CL A FIGS	FIGS	59,959,449	$613.4m0.92%	0.92%	Unchanged
20	COSTAR GROUP INC COM CSGP	CSGP	21,626,763	$612.5m0.92%	0.92%	Added +5.3m	+5,312,588 32.6%
21	ON HLDG AG NAMEN AKT A ONON	ONON	16,929,770	$599.7m0.90%	0.90%	Added +7.2m	+7,215,165 74.3%
22	NVIDIA CORPORATION COM NVDA	NVDA	2,965,306	$593.3m0.89%	0.89%	Added +45.5k	+45,548 1.6%
23	MORNINGSTAR INC COM MORN	MORN	3,499,146	$545.9m0.82%	0.82%	Added +2.7m	+2,739,631 360.7%
24	AMAZON COM INC COM AMZN	AMZN	1,956,523	$466.3m0.70%	0.70%	Added +661.9k	+661,869 51.1%
25	INTERACTIVE BROKERS GROUP IN COM CL A IBKR	IBKR	4,807,214	$418.4m0.63%	0.63%	Added +759.8k	+759,838 18.8%
26	VERTIV HOLDINGS CO COM CL A VRT	VRT	979,821	$328.1m0.49%	0.49%	Reduced -201.3k	-201,323 -17.0%
27	TAIWAN SEMICONDUCTOR MFG LTD SPONSORED ADS TSM	TSM	667,698	$318.9m0.48%	0.48%	Added +31.4k	+31,431 4.9%
28	AMPHENOL CORP CL A APH	APH	1,598,059	$281.8m0.42%	0.42%	Reduced -61.6k	-61,631 -3.7%
29	WELLTOWER INC COM WELL	WELL	1,232,060	$279.6m0.42%	0.42%	Reduced -112.9k	-112,881 -8.4%
30	SAMSARA INC COM CL A IOT	IOT	7,881,752	$255.6m0.38%	0.38%	Added +2.8m	+2,761,917 54.0%
31	AIRBNB INC COM CL A ABNB	ABNB	1,758,065	$251.6m0.38%	0.38%	Added +316.8k	+316,844 22.0%
32	SITEONE LANDSCAPE SUPPLY INC COM SITE	SITE	2,028,799	$232.1m0.35%	0.35%	Reduced -30.3k	-30,277 -1.5%
33	FORGENT POWER SOLUTIONS INC COM SHS CL A FPS	FPS	4,072,575	$227.5m0.34%	0.34%	Reduced -602.0k	-602,008 -12.9%
34	QUANTA SVCS INC COM PWR	PWR	315,789	$227.4m0.34%	0.34%	Reduced -10.1k	-10,051 -3.1%
35	EQUINIX INC COM EQIX	EQIX	195,637	$203.9m0.31%	0.31%	Reduced -48.3k	-48,338 -19.8%
36	LOAR HOLDINGS INC COM SHS LOAR	LOAR	2,523,332	$203.4m0.31%	0.31%	Added +157.0k	+157,033 6.6%
37	ALPHABET INC CAP STK CL A GOOGL	GOOGL	546,232	$195.2m0.29%	0.29%	Added +163.7k	+163,655 42.8%
38	BROADCOM INC COM AVGO	AVGO	514,536	$194.4m0.29%	0.29%	Reduced -8.7k	-8,683 -1.7%
39	ALPHABET INC CAP STK CL C GOOG	GOOG	541,579	$191.4m0.29%	0.29%	Added +402.6k	+402,561 289.6%
40	PRIMERICA INC COM PRI	PRI	671,453	$190.8m0.29%	0.29%	Reduced -188.6k	-188,573 -21.9%
41	METTLER TOLEDO INTERNATIONAL COM MTD	MTD	138,464	$176.9m0.27%	0.27%	Added +4.8k	+4,825 3.6%
42	LAS VEGAS SANDS CORP COM LVS	LVS	3,784,278	$174.8m0.26%	0.26%	Added +2.6m	+2,557,848 208.6%
43	ELI LILLY & CO COM LLY	LLY	140,540	$168.6m0.25%	0.25%	Added +55.5k	+55,474 65.2%
44	TOLL BROTHERS INC COM TOL	TOL	1,009,102	$166.2m0.25%	0.25%	Added +77.1k	+77,071 8.3%
45	BLACKSTONE DIGITAL INFRASTRU COMMON STOCK BXDC	BXDC	7,620,555	$164.8m0.25%	0.25%	New
46	ENPRO INC COM NPO	NPO	399,482	$150.6m0.23%	0.23%	Added +7.8k	+7,752 2.0%
47	HEICO CORP NEW CL A HEI.A	HEI.A	562,662	$145.1m0.22%	0.22%	Added +143.3k	+143,255 34.2%
48	MODERNA INC COM MRNA	MRNA	1,989,386	$139.3m0.21%	0.21%	New
49	NOVANTA INC COM NOVT	NOVT	850,494	$138.0m0.21%	0.21%	Reduced -64.6k	-64,589 -7.1%
50	DATADOG INC CL A COM DDOG	DDOG	508,356	$132.4m0.20%	0.20%	Reduced -79.0k	-79,026 -13.4%
51	CBRE GROUP INC CL A CBRE	CBRE	978,961	$131.9m0.20%	0.20%	Reduced -95.5k	-95,490 -8.9%
52	META PLATFORMS INC CL A META	META	233,313	$131.4m0.20%	0.20%	Reduced -23.4k	-23,387 -9.1%
53	LIBERTY LIVE HOLDINGS INC COM SHS SER C LLYVK	LLYVK	1,240,273	$131.0m0.20%	0.20%	Reduced -285.2k	-285,200 -18.7%
54	GDS HLDGS LTD SPONSORED ADS GDS	GDS	4,245,033	$127.5m0.19%	0.19%	Reduced -352.2k	-352,213 -7.7%
55	ARGENX SE SPONSORED ADR ARGX	ARGX	136,654	$126.8m0.19%	0.19%	Reduced -2.0k	-1,994 -1.4%
56	MACERICH CO COM MAC	MAC	4,999,756	$125.9m0.19%	0.19%	Added +915.1k	+915,063 22.4%
57	HOULIHAN LOKEY INC CL A HLI	HLI	869,544	$116.6m0.18%	0.18%	Reduced -191.9k	-191,859 -18.1%
58	CLOUDFLARE INC CL A COM NET	NET	471,598	$115.7m0.17%	0.17%	Added +14.3k	+14,274 3.1%
59	MERITAGE HOMES CORP COM MTH	MTH	1,341,653	$112.5m0.17%	0.17%	New
60	PROLOGIS INC. COM PLD	PLD	790,347	$107.1m0.16%	0.16%	Reduced -275.4k	-275,400 -25.8%
61	JEFFERIES FINL GROUP INC COM JEF	JEF	2,141,744	$107.0m0.16%	0.16%	Added +611.5k	+611,516 40.0%
62	ADVANCED DRAIN SYS INC DEL COM WMS	WMS	680,431	$106.8m0.16%	0.16%	Added +389.3k	+389,279 133.7%
63	TRANSDIGM GROUP INC COM TDG	TDG	78,501	$104.6m0.16%	0.16%	Reduced -163	-163 -0.2%
64	INDIE SEMICONDUCTOR INC CLASS A COM INDI	INDI	23,012,611	$103.3m0.16%	0.16%	Reduced -325.2k	-325,215 -1.4%
65	REPLIGEN CORP COM RGEN	RGEN	748,466	$102.1m0.15%	0.15%	Added +200.1k	+200,120 36.5%
66	CROWDSTRIKE HLDGS INC CL A CRWD	CRWD	126,394	$96.5m0.14%	0.14%	Added +15.8k	+15,806 14.3%
67	HILTON WORLDWIDE HLDGS INC COM HLT	HLT	291,397	$96.3m0.14%	0.14%	Added +26.0k	+26,034 9.8%
68	RBC BEARINGS INC COM RBC	RBC	149,226	$96.1m0.14%	0.14%	Reduced -32.3k	-32,255 -17.8%
69	JOHN BEAN TECHNOLOGIES CORP COM JBTM	JBTM	660,557	$95.8m0.14%	0.14%	Added +517	+517 0.1%
70	DRAFTKINGS INC NEW COM CL A DKNG	DKNG	3,768,624	$95.2m0.14%	0.14%	Reduced -450.1k	-450,142 -10.7%
71	HEARTFLOW INC COM HTFL	HTFL	3,225,133	$94.6m0.14%	0.14%	Reduced -602.4k	-602,398 -15.7%
72	CASELLA WASTE SYS INC CL A CWST	CWST	965,239	$93.6m0.14%	0.14%	Added +246.8k	+246,778 34.4%
73	HINGE HEALTH INC CL A HNGE	HNGE	1,117,678	$92.8m0.14%	0.14%	Reduced -12.4k	-12,375 -1.1%
74	BROOKFIELD CORP CL A LTD VT SH BN	BN	2,132,011	$90.8m0.14%	0.14%	Reduced -773.5k	-773,499 -26.6%
75	COGNEX CORP COM CGNX	CGNX	1,251,099	$90.6m0.14%	0.14%	Reduced -489.1k	-489,067 -28.1%
76	RUBRIK INC. CL A RBRK	RBRK	1,115,395	$89.5m0.13%	0.13%	Added +837.9k	+837,860 301.9%
77	BILLIONTOONE INC CL A BLLN	BLLN	742,093	$89.0m0.13%	0.13%	Added +608	+608 0.1%
78	SNOWFLAKE INC CL A SNOW	SNOW	341,931	$87.0m0.13%	0.13%	Reduced -56.5k	-56,537 -14.2%
79	AXON ENTERPRISE INC COM AXON	AXON	153,615	$86.1m0.13%	0.13%	Added +35.7k	+35,673 30.2%
80	GAMING & LEISURE PPTYS INC COM GLPI	GLPI	1,844,141	$82.1m0.12%	0.12%	Reduced -2.1k	-2,132 -0.1%
81	MONOLITHIC PWR SYS INC COM MPWR	MPWR	58,604	$81.0m0.12%	0.12%	Reduced -4.4k	-4,390 -7.0%
82	MERCADOLIBRE INC COM MELI	MELI	46,955	$79.7m0.12%	0.12%	Added +4.2k	+4,162 9.7%
83	HEICO CORP NEW COM HEI	HEI	218,976	$78.0m0.12%	0.12%	Added +51.0k	+51,000 30.4%
84	RADNET INC COM RDNT	RDNT	1,260,992	$77.8m0.12%	0.12%	Added +450.9k	+450,926 55.7%
85	FIGMA INC CLASS A COM STK FIG	FIG	4,264,145	$77.1m0.12%	0.12%	Added +2.2m	+2,211,941 107.8%
86	PUBLIC STORAGE COM PSA	PSA	241,020	$76.7m0.12%	0.12%	Reduced -25.8k	-25,827 -9.7%
87	LIBERTY MEDIA CORP DEL COM LBTY ONE S C FWONK	FWONK	800,000	$76.1m0.11%	0.11%	Unchanged
88	BRIGHT HORIZONS FAM SOL IN D COM BFAM	BFAM	1,055,150	$74.8m0.11%	0.11%	Reduced -47.2k	-47,158 -4.3%
89	NU HLDGS LTD ORD SHS CL A NU	NU	5,597,914	$74.8m0.11%	0.11%	Added +2.1m	+2,068,263 58.6%
90	WINGSTOP INC COM WING	WING	430,165	$74.6m0.11%	0.11%	Added +222.2k	+222,178 106.8%
91	MERCURY SYS INC COM MRCY	MRCY	606,919	$74.2m0.11%	0.11%	Reduced -38.1k	-38,147 -5.9%
92	KARMAN HLDGS INC COMMON STOCK KRMN	KRMN	1,450,878	$72.4m0.11%	0.11%	Added +171.8k	+171,785 13.4%
93	ASML HOLDING N V N Y REGISTRY SHS ASML	ASML	36,286	$72.2m0.11%	0.11%	Added +661	+661 1.9%
94	THE BALDWIN INSURANCE GRP IN COM CL A BWIN	BWIN	2,712,386	$72.1m0.11%	0.11%	Added +2.3k	+2,318 0.1%
95	ALIBABA GROUP HLDG LTD SPONSORED ADS BABA	BABA	740,460	$71.1m0.11%	0.11%	Added +104.9k	+104,920 16.5%
96	MIRION TECHNOLOGIES INC COM CL A MIR	MIR	3,906,083	$70.0m0.11%	0.11%	Added +2.7m	+2,692,335 221.8%
97	BLACKSTONE INC COM BX	BX	591,248	$69.6m0.10%	0.10%	Added +496.6k	+496,649 525.0%
98	CRH PLC ORD CRH	CRH	649,916	$69.5m0.10%	0.10%	Reduced -89.3k	-89,260 -12.1%
99	AAON INC COM PAR $0.004 AAON	AAON	544,402	$69.1m0.10%	0.10%	Reduced -300.0k	-299,975 -35.5%
100	DYNATRACE INC COM NEW DT	DT	1,569,714	$68.9m0.10%	0.10%	Reduced -590.0k	-589,980 -27.3%

Sold out since Q1 2026

Security	Ticker	Shares held before	Value then
BADGER METER INC BMI	BMI	312,213	$47.6m312.2k shares
ALKAMI TECHNOLOGY INC ALKT	ALKT	2,308,036	$36.2m2.3m shares
CHAMPION HOMES INC SKY	SKY	469,822	$34.9m469.8k shares
TAYLOR MORRISON HOME CORP TMHC	TMHC	554,505	$32.3m554.5k shares
VARONIS SYS INC VRNS	VRNS	1,239,294	$26.6m1.2m shares
GCI LIBERTY INC GLIBK	GLIBK	688,388	$25.6m688.4k shares
SHERWIN WILLIAMS CO SHW	SHW	70,846	$22.7m70.8k shares
ACCELERANT HOLDINGS ARX	ARX	1,208,794	$16.1m1.2m shares
INSPIRE MED SYS INC INSP	INSP	298,470	$15.4m298.5k shares
SERVICENOW INC NOW	NOW	134,330	$14.0m134.3k shares
ESSENTIAL PPTYS RLTY TR INC EPRT	EPRT	434,808	$13.2m434.8k shares
WIX COM LTD WIX	WIX	136,080	$12.3m136.1k shares
ARS PHARMACEUTICALS INC SPRY	SPRY	1,273,341	$10.2m1.3m shares
AMERICAN HEALTHCARE REIT INC AHR	AHR	204,159	$9.6m204.2k shares
CARLYLE GROUP INC CG	CG	157,000	$7.6m157.0k shares
PDD HOLDINGS INC PDD	PDD	61,948	$6.3m61.9k shares
AGREE RLTY CORP ADC	ADC	83,347	$6.3m83.3k shares
VIA TRANSN INC VIA	VIA	370,985	$5.6m371.0k shares
AMERICAN TOWER CORP NEW AMT	AMT	23,709	$4.1m23.7k shares
VIKING THERAPEUTICS INC VKTX	VKTX	125,486	$4.1m125.5k shares
CLEARWATER ANALYTICS HLDGS I		154,864	$3.7m154.9k shares
FIVERR INTL LTD FVRR	FVRR	327,869	$3.3m327.9k shares
AMERICAN HOMES 4 RENT AMH	AMH	93,977	$2.6m94.0k shares
INSULET CORP PODD	PODD	11,229	$2.4m11.2k shares
SOLARIS ENERGY INFRAS INC SEI	SEI	38,970	$2.2m39.0k shares

Stakes above 5%

Companies where this manager has reported owning more than 5% of a class of shares, on Schedule 13D (may seek influence) or 13G (passive): its latest filing for each, from 19 Dec 2024 on.

Company	Ticker	Stake	Change	Schedule	Last filed
FIGS INC FIGS · 13D · filed 2026-03-03	FIGS	37.9%≈ $613.4m	-0.1 pts	13D	2026-03-03
RED ROCK RESORTS INC RRR · 13G · filed 2026-06-03	RRR	27.9%≈ $1.1bn	+5.3 pts	13G	2026-06-03
CHOICE HOTELS INTL INC CHH · 13G · filed 2026-08-14	CHH	20.5%≈ $1.0bn	+4.4 pts	13G	2026-08-14
VAIL RESORTS INC MTN · 13G · filed 2026-08-14	MTN	18.3%≈ $890.0m	+4.2 pts	13G	2026-08-14
HYATT HOTELS CORP H · 13G · filed 2026-08-14	H	17.7%≈ $1.4bn	+3.1 pts	13G	2026-08-14
FACTSET RESH SYS INC FDS · 13G · filed 2026-08-14	FDS	11.8%≈ $966.5m	+1.6 pts	13G	2026-08-14
GARTNER INC IT · 13G · filed 2026-06-03	IT	11.3%≈ $979.7m	+2.9 pts	13G	2026-06-03
INDIE SEMICONDUCTOR INC INDI · 13G · filed 2025-11-14	INDI	10.9%≈ $96.8m	-2.1 pts	13G	2025-11-14
GUIDEWIRE SOFTWARE INC GWRE · 13G · filed 2026-07-02	GWRE	10.8%≈ $1.1bn	+3.0 pts	13G	2026-07-02
KINSALE CAP GROUP INC KNSL · 13G · filed 2026-06-03	KNSL	10.7%≈ $815.6m	+2.0 pts	13G	2026-06-03
MORNINGSTAR INC MORN · 13G · filed 2026-08-14	MORN	9.2%≈ $545.9m	new	13G	2026-08-14
TWFG INC TWFG · 13G · filed 2026-08-14	TWFG	8.7%≈ $27.3m	+1.2 pts	13G	2026-08-14
BIRKENSTOCK HOLDING PLC BIRK · 13G · filed 2026-08-14	BIRK	8.0%≈ $634.2m	+2.9 pts	13G	2026-08-14
CODERE ONLINE LUXEMBOURG S A CDRO · 13G · filed 2026-08-14	CDRO	7.7%≈ $33.5m	no change	13G	2026-08-14
BLACKSTONE DIGITAL INFRASTRU BXDC · 13G · filed 2026-08-14	BXDC	7.6%≈ $164.8m	new	13G	2026-08-14
ANDERSEN GROUP INC ANDG · 13G · filed 2026-05-15	ANDG	7.1%≈ $34.0m	new	13G	2026-05-15
MONTROSE ENVIRONMENTAL GROUP ONT · 13G · filed 2025-11-14	ONT	6.1%≈ $43.7m	-1.7 pts	13G	2025-11-14
ON HLDG AG ONON · 13G · filed 2026-08-14	ONON	5.7%≈ $599.0m	new	13G	2026-08-14
COSTAR GROUP INC CSGP · 13G · filed 2026-08-14	CSGP	5.3%≈ $612.5m	new	13G	2026-08-14
STEVANATO GROUP S P A STVN · 13G · filed 2026-05-15	STVN	5.0%≈ $45.2m	new	13G	2026-05-15