Bamco INC /ny/

Diversified strategySector-focusedMomentum follower

Total reported value

$33.1B

Reporting period: 2026-03-31 · Number of holdings: 326

BAMCO INC /NY/ disclosed 326 holdings in its latest 13F filing for the period ending 2026-03-31, with total reported value of $33.1B and a quarterly turnover rate of 25.9%.

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Personality snowflake

Concentration: 12.83
Portfolio Stability: 25.93
Momentum/Contrarian: 100
Sector conviction: 100
Diversification: 100
Sizing Uniformity: 69.21

Recent moves

Trim CSGP
-16.3%　-$652.9M
Trim TSLA
+0.1%　-$927.7M
Add FIGS
0.0%　$204.5M
Add SHOP
+106.2%　$191.3M
Add VRSK
+92.8%　$185.3M
Trim IDXX
-9.2%　-$298.7M

Holdings Map

New buyAddUnchangedTrim

Institutional Game-State Analysis

Core Intent

BAMCO is doubling down on its highest-conviction momentum names, adding to Tesla shares despite the stock's weight decline, and ramping up Shopify and Verisk Analytics. Simultaneously, it is shedding Microsoft, CoStar, and IDEXX — a decisive rotation that prioritizes pure price momentum over fundamental diversification. This is a hunter's portfolio, not a protector's, chasing alpha through concentrated bets on growth stories with no defensive positions.

Macro & Fundamentals

The macro bet here is an unhedged conviction that the consumer remains the engine of the economy and that the technology-led growth cycle has further to run. The 54% allocation to Consumer Discretionary combined with a momentum tilt of 100 implies they are pricing in a no-landing scenario where innovation-driven companies continue to command premium multiples. The opposing thesis — that the consumer is depleting excess savings, that profit margins in e-commerce are compressing, or that regulatory and competitive risks to Tesla and Shopify are underpriced — is simply not hedged.

Blind Spots / Risks

Tesla's 13% weight is the lone structural vulnerability — a 5% move in the stock swings the entire portfolio by roughly 67bp, and BAMCO's decision to add shares during a drawdown signals they are doubling down on the narrative. Combined with the 100 momentum tilt and 54% Consumer Discretionary allocation, this is a crowded bet on a single factor and a single sector; a regime shift away from growth or a mean-reversion in momentum would inflict disproportionate damage.

The above is AI-generated from public regulatory filings and summarizes historical data only. It is not investment advice.

Top 10 holdings by weight

Full holdings list this quarter

#	Ticker	Issuer	Asset Subclass	Weight	Weight Change	Shares Change
1	TSLA	Tesla INC	Stock-Consumer Disc	13.39%	-1.14%	+0.05%
2	ACGL	Arch Capital Group Ltd.	Stock-Financials	4.84%	+0.17%	-7.10%
3	MSCI	Msci INC	Stock-Financials	4.39%	+0.11%	-2.05%
4	GWRE	Guidewire Software INC	Stock-Tech	2.98%	+0.18%	+28.17%
5	IT	Gartner INC	Stock-Tech	2.83%	-0.05%	+40.46%
6	IDXX	Idexx Laboratories INC	Stock-Healthcare	2.77%	-0.53%	-9.16%
7	H	Hyatt Hotels CORP - Cl A	Stock-Consumer Disc	2.75%	+0.10%	+3.85%
8	FIGS	Figs Inc-class A	Stock-Other	2.67%	+0.82%	—
9	FDS	Factset Research Systems INC	Stock-Financials	2.46%	—	+30.04%
10	CHH	Choice Hotels Intl INC	Stock-Consumer Disc	2.40%	+0.49%	+4.11%
11	RRR	Red Rock Resorts Inc-class A	Stock-Other	2.16%	+0.06%	+7.13%
12	SCHW	Schwab (charles) CORP	Stock-Financials	2.12%	—	+5.72%
13	KNSL	Kinsale Capital Group INC	Stock-Financials	2.09%	—	+13.84%
14	CSGP	Costar Group INC	Stock-Real Estate	1.99%	-1.56%	-16.33%
15	MTN	Vail Resorts INC	Stock-Consumer Disc	1.95%	—	+4.86%
16	SPOT	Spotify Technology S.A.	Stock-Comm Services	1.93%	+0.36%	+32.31%
17	SHOP	Shopify INC - Class A	Stock-Tech	1.69%	+0.69%	+106.19%
18	NVDA	Nvidia CORP	Stock-Tech	1.54%	+0.03%	-2.31%
19	VRSK	Verisk Analytics INC	Stock-Industrials	1.44%	+0.65%	+92.84%
20	BIRK	Birkenstock Holding plc	Stock-Other	1.01%	—	+17.57%
21	✓	On Hldg AG	Stock-Other	1.00%	+0.32%	+79.72%
22	VRT	Vertiv Holdings Co-a	Stock-Industrials	0.89%	+0.21%	-23.58%
23	SITE	Siteone Landscape Supply INC	Stock-Industrials	0.83%	—	+1.51%
24	IBKR	Interactive Brokers Gro-cl A	Stock-Financials	0.82%	—	-12.84%
25	AMZN	Amazon.com INC	Stock-Consumer Disc	0.81%	—	+5.67%
26	WELL	Welltower INC	Stock-Real Estate	0.80%	—	+5.28%
27	EQIX	Equinix INC	Stock-Real Estate	0.72%	+0.42%	+67.76%
28	PRI	Primerica INC	Stock-Financials	0.65%	-0.14%	-24.06%
29	TSM	Taiwan Semiconductor-sp Adr	Stock-Tech	0.65%	—	+0.25%
30	APH	Amphenol Corp-cl A	Stock-Tech	0.63%	—	-2.98%
31	GDS	Gds Holdings LTD - Adr	Stock-Other	0.56%	+0.20%	+21.46%
32	ABNB	Airbnb Inc-class A	Stock-Consumer Disc	0.55%	+0.23%	+63.76%
33	PWR	Quanta Services INC	Stock-Industrials	0.54%	—	-0.66%
34	WYNN	Wynn Resorts LTD	Stock-Consumer Disc	0.53%	—	+42.41%
35	MTD	Mettler-toledo International	Stock-Healthcare	0.51%	—	-8.68%
36	IOT	Samsara Inc-cl A	Stock-Tech	0.49%	—	+24.27%
37	AVGO	Broadcom INC	Stock-Tech	0.49%	—	-2.72%
38	HLI	Houlihan Lokey INC	Stock-Financials	0.46%	—	-5.57%
39	META	Meta Platforms Inc-class A	Stock-Comm Services	0.44%	—	-4.97%
40	CBRE	Cbre Group INC - A	Stock-Real Estate	0.44%	-0.15%	-20.96%
41	LLYVK	Liberty Live Holdings-c	Stock-Other	0.43%	—	-5.47%
42	PLD	Prologis INC	Stock-Real Estate	0.43%	—	-3.91%
43	FPS	Forgent Power Solutions INC	Stock-Other	0.41%	+0.41%	NEW
44	LOAR	Loar Holdings INC	Stock-Other	0.41%	—	+11.64%
45	MORN	Morningstar INC	Stock-Financials	0.39%	-0.34%	-38.84%
46	TOL	Toll Brothers INC	Stock-Consumer Disc	0.38%	—	-20.08%
47	BN	Brookfield CORP	Stock-Financials	0.35%	-0.10%	-20.09%
48	GOOGL	Alphabet Inc-cl A	Stock-Comm Services	0.33%	+0.20%	+142.91%
49	NOVT	Novanta INC	Stock-Other	0.33%	—	-2.34%
50	KRMN	Karman Holdings INC	Stock-Industrials	0.31%	—	-33.18%

1–50 of 326

Reported value over time

Sector allocation

Sector allocation over time

Quarterly history

Period	Holdings	Total value	Stability	Top holdings
2026-03-31	326	$33.1B	26	1TSLA 2ACGL 3MSCI Top holdings2026-03-31 1.TSLA 2.ACGL 3.MSCI 4.GWRE 5.IT 6.IDXX 7.H 8.FIGS 9.FDS 10.CHH
2025-12-31	327	$36.9B	18	1TSLA 2ACGL 3MSCI Top holdings2025-12-31 1.TSLA 2.ACGL 3.MSCI 4.CSGP 5.IDXX 6.IT 7.GWRE 8.H 9.FDS 10.RRR
2025-09-30	330	$37.7B	33	1TSLA 2ACGL 3CSGP Top holdings2025-09-30 1.TSLA 2.ACGL 3.CSGP 4.MSCI 5.IDXX 6.GWRE 7.IT 8.H 9.MTN 10.KNSL
2025-06-30	306	$36.9B	0	1TSLA 2ACGL 3CSGP Top holdings2025-06-30 1.TSLA 2.ACGL 3.CSGP 4.IT 5.GWRE 6.MSCI 7.IDXX 8.FDS 9.MTN 10.KNSL
2025-03-31	314	$34.0B	100	1TSLA 2ACGL 3IT Top holdings2025-03-31 1.TSLA 2.ACGL 3.IT 4.CSGP 5.MSCI 6.GWRE 7.FDS 8.IDXX 9.KNSL 10.MTN
2024-12-31	316	$38.7B	0	1TSLA 2IT 3ACGL Top holdings2024-12-31 1.TSLA 2.IT 3.ACGL 4.CSGP 5.MSCI 6.FDS 7.GWRE 8.MTN 9.H 10.IDXX
2024-09-30	328	$37.7B	0	1TSLA 2ACGL 3IT Top holdings2024-09-30 1.TSLA 2.ACGL 3.IT 4.CSGP 5.MSCI 6.FDS 7.GWRE 8.IDXX 9.MTN 10.H
2024-06-30	329	$34.9B	0	1TSLA 2ACGL 3IT Top holdings2024-06-30 1.TSLA 2.ACGL 3.IT 4.CSGP 5.FDS 6.MSCI 7.IDXX 8.MTN 9.GWRE 10.H
2024-03-31	332	$37.5B	0	1TSLA 2IT 3ACGL Top holdings2024-03-31 1.TSLA 2.IT 3.ACGL 4.CSGP 5.MSCI 6.FDS 7.IDXX 8.MTN 9.KNSL 10.H
2023-12-31	330	$37.5B	0	1TSLA 2IT 3CSGP Top holdings2023-12-31 1.TSLA 2.IT 3.CSGP 4.ACGL 5.FDS 6.MSCI 7.IDXX 8.MTN 9.AKX 10.H
2023-09-30	334	$34.4B	0	1TSLA 2ACGL 3IT Top holdings2023-09-30 1.TSLA 2.ACGL 3.IT 4.CSGP 5.FDS 6.MSCI 7.MTN 8.IDXX 9.KNSL 10.IRDM
2023-06-30	343	$36.1B	0	1TSLA 2CSGP 3IT Top holdings2023-06-30 1.TSLA 2.CSGP 3.IT 4.ACGL 5.IDXX 6.MTN 7.FDS 8.MSCI 9.IRDM 10.KNSL
2023-03-31	360	$33.3B	0	1TSLA 2IT 3ACGL Top holdings2023-03-31 1.TSLA 2.IT 3.ACGL 4.CSGP 5.MSCI 6.IDXX 7.FDS 8.MTN 9.IRDM 10.AKX
2022-12-31	375	$29.8B	0	1TSLA 2IT 3CSGP Top holdings2022-12-31 1.TSLA 2.IT 3.CSGP 4.ACGL 5.MTN 6.FDS 7.MSCI 8.IDXX 9.IRDM 10.SCHW
2022-09-30	370	$31.0B	0	1TSLA 2IT 3CSGP Top holdings2022-09-30 1.TSLA 2.IT 3.CSGP 4.FDS 5.MTN 6.ACGL 7.MSCI 8.IDXX 9.IRDM 10.KNSL
2022-06-30	371	$31.1B	0	1TSLA 2IT 3CSGP Top holdings2022-06-30 1.TSLA 2.IT 3.CSGP 4.FDS 5.MTN 6.ACGL 7.MSCI 8.IDXX 9.IRDM 10.CHH
2022-03-31	388	$40.7B	0	1TSLA 2IT 3IDXX Top holdings2022-03-31 1.TSLA 2.IT 3.IDXX 4.CSGP 5.MTN 6.FDS 7.MSCI 8.ACGL 9.CHH 10.TECH
2021-12-31	404	$47.1B	0	1TSLA 2IT 3IDXX Top holdings2021-12-31 1.TSLA 2.IT 3.IDXX 4.CSGP 5.MTN 6.MSCI 7.FDS 8.ACGL 9.AKX 10.TECH
2021-09-30	397	$44.1B	0	1TSLA 2IT 3IDXX Top holdings2021-09-30 1.TSLA 2.IT 3.IDXX 4.CSGP 5.MTN 6.MSCI 7.FDS 8.ACGL 9.PENN 10.TECH
2021-06-30	402	$43.7B	96	1TSLA 2IDXX 3CSGP Top holdings2021-06-30 1.TSLA 2.IDXX 3.CSGP 4.MTN 5.IT 6.MSCI 7.FDS 8.ACGL 9.PENN 10.AKX
2021-03-31	395	$40.6B	16	1TSLA 2CSGP 3IDXX Top holdings2021-03-31 1.TSLA 2.CSGP 3.IDXX 4.MTN 5.PENN 6.IT 7.MSCI 8.FDS 9.ACGL 10.AKX
2020-12-31	377	$40.4B	26	1TSLA 2CSGP 3IDXX Top holdings2020-12-31 1.TSLA 2.CSGP 3.IDXX 4.MTN 5.MSCI 6.PENN 7.IT 8.FDS 9.AKX 10.ACGL
2020-09-30	356	$32.6B	21	1TSLA 2CSGP 3IDXX Top holdings2020-09-30 1.TSLA 2.CSGP 3.IDXX 4.MTN 5.FDS 6.PENN 7.MSCI 8.AKX 9.IT 10.ACGL
2020-06-30	343	$27.7B	34	1TSLA 2CSGP 3IDXX Top holdings2020-06-30 1.TSLA 2.CSGP 3.IDXX 4.FDS 5.MTN 6.MSCI 7.AKX 8.IT 9.GWRE 10.ACGL
2020-03-31	337	$20.4B	34	1CSGP 2IDXX 3TSLA Top holdings2020-03-31 1.CSGP 2.IDXX 3.TSLA 4.FDS 5.MTN 6.MSCI 7.ACGL 8.IT 9.AKX 10.GWRE
2019-12-31	353	$26.2B	13	1CSGP 2MTN 3IT Top holdings2019-12-31 1.CSGP 2.MTN 3.IT 4.IDXX 5.ACGL 6.FDS 7.GWRE 8.TSLA 9.AKX 10.MSCI
2019-09-30	350	$24.3B	15	1CSGP 2MTN 3IDXX Top holdings2019-09-30 1.CSGP 2.MTN 3.IDXX 4.IT 5.ACGL 6.GWRE 7.FDS 8.AKX 9.MSCI 10.BFAM
2019-06-30	361	$24.9B	17	1CSGP 2IDXX 3MTN Top holdings2019-06-30 1.CSGP 2.IDXX 3.MTN 4.IT 5.FDS 6.ACGL 7.GWRE 8.MSCI 9.AKX 10.BFAM
2019-03-31	357	$23.6B	24	1CSGP 2MTN 3IT Top holdings2019-03-31 1.CSGP 2.MTN 3.IT 4.IDXX 5.ACGL 6.FDS 7.GWRE 8.AKX 9.TSLA 10.MSCI
2018-12-31	369	$19.8B	26	1MTN 2IT 3CSGP Top holdings2018-12-31 1.MTN 2.IT 3.CSGP 4.IDXX 5.ACGL 6.FDS 7.TSLA 8.GWRE 9.AKX 10.CHH
2018-09-30	371	$24.1B	17	1MTN 2IT 3CSGP Top holdings2018-09-30 1.MTN 2.IT 3.CSGP 4.IDXX 5.ACGL 6.GWRE 7.FDS 8.AKX 9.TSLA 10.CHH
2018-06-30	362	$22.9B	16	1MTN 2CSGP 3IDXX Top holdings2018-06-30 1.MTN 2.CSGP 3.IDXX 4.IT 5.ACGL 6.GWRE 7.TSLA 8.FDS 9.AKX 10.GLPI
2018-03-31	352	$21.7B	18	1MTN 2CSGP 3IDXX Top holdings2018-03-31 1.MTN 2.CSGP 3.IDXX 4.IT 5.ACGL 6.FDS 7.GWRE 8.TSLA 9.AKX 10.CHH
2017-12-31	319	$21.7B	15	1MTN 2IT 3CSGP Top holdings2017-12-31 1.MTN 2.IT 3.CSGP 4.ACGL 5.IDXX 6.FDS 7.TSLA 8.GWRE 9.AKX 10.GLPI
2017-09-30	318	$21.1B	15	1MTN 2IT 3ACGL Top holdings2017-09-30 1.MTN 2.IT 3.ACGL 4.CSGP 5.IDXX 6.TSLA 7.FDS 8.GWRE 9.MTD 10.GLPI
2017-06-30	338	$19.6B	17	1MTN 2IT 3ACGL Top holdings2017-06-30 1.MTN 2.IT 3.ACGL 4.CSGP 5.IDXX 6.TSLA 7.FDS 8.GLPI 9.MTD 10.GWRE
2017-03-31	323	$18.9B	16	1MTN 2ACGL 3IDXX Top holdings2017-03-31 1.MTN 2.ACGL 3.IDXX 4.IT 5.CSGP 6.FDS 7.TSLA 8.GLPI 9.BFAM 10.MTD
2016-12-31	321	$17.8B	20	1MTN 2IT 3ACGL Top holdings2016-12-31 1.MTN 2.IT 3.ACGL 4.IDXX 5.CSGP 6.FDS 7.GLPI 8.TSLA 9.BFAM 10.MTD
2016-09-30	308	$18.9B	16	1MTN 2IDXX 3ACGL Top holdings2016-09-30 1.MTN 2.IDXX 3.ACGL 4.IT 5.CSGP 6.FDS 7.GLPI 8.BFAM 9.MTD 10.TSLA
2016-06-30	301	$18.8B	20	1IT 2MTN 3CSGP Top holdings2016-06-30 1.IT 2.MTN 3.CSGP 4.ACGL 5.IDXX 6.FDS 7.GLPI 8.BFAM 9.GWRE 10.TSLA
2016-03-31	295	$18.9B	24	1IT 2MTN 3ACGL Top holdings2016-03-31 1.IT 2.MTN 3.ACGL 4.CSGP 5.FDS 6.IDXX 7.UAA 8.MIDD 9.GLPI 10.BFAM
2015-12-31	313	$21.6B	19	1IT 2MTN 3ACGL Top holdings2015-12-31 1.IT 2.MTN 3.ACGL 4.CSGP 5.FDS 6.465685 7.IDXX 8.MIDD 9.UAA 10.MTD
2015-09-30	342	$22.1B	22	1IT 2ACGL 3FDS Top holdings2015-09-30 1.IT 2.ACGL 3.FDS 4.MTN 5.IDXX 6.UAA 7.CSGP 8.465685 9.MIDD 10.DKS
2015-06-30	355	$25.4B	18	1IT 2ACGL 3FDS Top holdings2015-06-30 1.IT 2.ACGL 3.FDS 4.CSGP 5.MTN 6.MIDD 7.IDXX 8.465685 9.MTD 10.UAA
2015-03-31	359	$25.8B	20	1IT 2FDS 3CSGP Top holdings2015-03-31 1.IT 2.FDS 3.CSGP 4.IDXX 5.ACGL 6.MTN 7.465685 8.DKS 9.MTD 10.UAA
2014-12-31	361	$24.9B	21	1IT24656853IDXX Top holdings2014-12-31 1.IT 2.465685 3.IDXX 4.ACGL 5.CSGP 6.FDS 7.MTN 8.DKS 9.MIDD 10.MTD
2014-09-30	357	$24.1B	17	1IT24656853ACGL Top holdings2014-09-30 1.IT 2.465685 3.ACGL 4.MTN 5.FDS 6.CSGP 7.IDXX 8.H 9.DKS 10.UAA
2014-06-30	359	$25.2B	16	1IT24656853ACGL Top holdings2014-06-30 1.IT 2.465685 3.ACGL 4.IDXX 5.FDS 6.DKS 7.GWRUSD 8.MTN 9.H 10.ENOV
2014-03-31	358	$24.5B	17	1IT24656853ACGL Top holdings2014-03-31 1.IT 2.465685 3.ACGL 4.DKS 5.IDXX 6.CSGP 7.FDS 8.GWRUSD 9.ENOV 10.MTN
2013-12-31	347	$24.1B	20	1IT 2ACGL 3DKS Top holdings2013-12-31 1.IT 2.ACGL 3.DKS 4.465685 5.GLPI 6.FDS 7.MTN 8.IDXX 9.GWRUSD 10.UNFI
2013-09-30	317	$21.8B	19	1ACGL 2IT3465685 Top holdings2013-09-30 1.ACGL 2.IT 3.465685 4.DKS 5.PENN 6.FDS 7.MTN 8.IDXX 9.GWRUSD 10.LKQ
2013-06-30	306	$19.2B	0	1ACGL 2IT3465685 Top holdings2013-06-30 1.ACGL 2.IT 3.465685 4.PENN 5.DKS 6.FDS 7.MTN 8.SBAC 9.GWRUSD 10.IDXX

Holding changes this quarter

Bamco INC /ny/'s most significant position changes for 2026-03-31: New buy: Forgent Power Solutions INC (FPS); Sold out: Exact Sciences CORP (EXK); New buy: Public Storage (PSA); Sold out: Louisiana-pacific CORP (LPX); New buy: Iron Mountain INC (IRM).

Position changes disclosed by Bamco INC /ny/ for the quarter ending 2026-03-31, including ticker, issuer, weight change, shares change, and action
#	Ticker	Issuer	Weight Change	Shares Change	Action
1	FIGS	Figs Inc-class A	+0.8%	—	Unchanged
2	SHOP	Shopify INC - Class A	+0.7%	+106.19%	Add
3	VRSK	Verisk Analytics INC	+0.7%	+92.84%	Add
4	CHH	Choice Hotels Intl INC	+0.5%	+4.11%	Add
5	EQIX	Equinix INC	+0.4%	+67.76%	Add
6	SPOT	Spotify Technology S.A.	+0.4%	+32.31%	Add
7	✓	On Hldg AG	+0.3%	+79.72%	Add
8	ABNB	Airbnb Inc-class A	+0.2%	+63.76%	Add
9	VRT	Vertiv Holdings Co-a	+0.2%	-23.58%	Trim
10	DLR	Digital Realty Trust INC	+0.2%	+250.82%	Add
11	GOOGL	Alphabet Inc-cl A	+0.2%	+142.91%	Add
12	GDS	Gds Holdings LTD - Adr	+0.2%	+21.46%	Add
13	GWRE	Guidewire Software INC	+0.2%	+28.17%	Add
14	ACGL	Arch Capital Group Ltd.	+0.2%	-7.10%	Trim
15	BLLN	Billiontoone INC Cl A	+0.1%	+336.17%	Add
16	MSCI	Msci INC	+0.1%	-2.05%	Trim
17	H	Hyatt Hotels CORP - Cl A	+0.1%	+3.85%	Add
18	RRR	Red Rock Resorts Inc-class A	+0.1%	+7.13%	Add
19	NVDA	Nvidia CORP	0%	-2.31%	Trim
20	IT	Gartner INC	-0.1%	+40.46%	Add
21	BN	Brookfield CORP	-0.1%	-20.09%	Trim
22	CPNG	Coupang INC	-0.1%	-34.27%	Trim
23	TTAN	Servicetitan Inc-a	-0.1%	+1.59%	Add
24	FICO	Fair Isaac CORP	-0.1%	-15.62%	Trim
25	MELI	Mercadolibre INC	-0.1%	-30.94%	Trim
26	ICLR	ICON Public Limited Company	-0.1%	-20.11%	Trim
27	PRI	Primerica INC	-0.1%	-24.06%	Trim
28	IBP	Installed Building Products	-0.1%	-53.16%	Trim
29	CBRE	Cbre Group INC - A	-0.2%	-20.96%	Trim
30	ODD	Oddity Tech Ltd.	-0.2%	-95.37%	Trim
31	DKNG	Draftkings Inc-cl A	-0.2%	-9.75%	Trim
32	FROG	JFrog Ltd.	-0.2%	-58.47%	Trim
33	BABA	Alibaba Group Holding-sp Adr	-0.2%	-40.70%	Trim
34	BX	Blackstone INC	-0.2%	-83.69%	Trim
35	INTA	Intapp INC	-0.2%	-35.57%	Trim
36	JLL	Jones Lang Lasalle INC	-0.3%	-57.26%	Trim
37	MORN	Morningstar INC	-0.3%	-38.84%	Trim
38	MSFT	Microsoft CORP	-0.4%	-78.42%	Trim
39	CWAN	Clearwater Analytics Holdings, Inc.	-0.5%	-98.02%	Trim
40	IDXX	Idexx Laboratories INC	-0.5%	-9.16%	Trim
41	TSLA	Tesla INC	-1.1%	+0.05%	Add
42	CSGP	Costar Group INC	-1.6%	-16.33%	Trim
43	FPS	Forgent Power Solutions INC	—	NEW	New buy
44	EXK	Exact Sciences CORP	—	EXIT	Sold out
45	PSA	Public Storage	—	NEW	New buy
46	LPX	Louisiana-pacific CORP	—	EXIT	Sold out
47	IRM	Iron Mountain INC	—	NEW	New buy
48	GTLB	Gitlab Inc-cl A	—	EXIT	Sold out
49	MASI*	Masimo CORP	—	EXIT	Sold out
50	CZR	Caesars Entertainment INC	—	NEW	New buy

FAQ

What is Bamco INC /ny/ and what type of investor is it?

Bamco INC /ny/ is a investment manager that files SEC Form 13F quarterly, disclosing its U.S. public equity holdings to regulators. As of the most recent reporting period (2026-03-31), the firm manages a tracked equity portfolio valued at approximately $33.1B, spread across 326 disclosed positions.

What are Bamco INC /ny/'s largest equity positions?

Based on the latest 13F filing, Bamco INC /ny/'s top holdings by market value are: 1. Tesla INC (TSLA) — $4.4B (13.4%) 2. Arch Capital Group Ltd. (ACGL) — $1.6B (4.8%) 3. Msci INC (MSCI) — $1.5B (4.4%) 4. Guidewire Software INC (GWRE) — $986.7M (3.0%) 5. Gartner INC (IT) — $937.0M (2.8%)

What changes did Bamco INC /ny/ make in its most recent portfolio filing?

In the latest reported quarter, Bamco INC /ny/ made 49 notable position adjustments: 4 new positions were initiated, 17 existing holdings were added to, 24 positions were partially reduced, and 4 were completely exited. The largest of these moves: New buy: Forgent Power Solutions INC (FPS); Sold out: Exact Sciences CORP (EXK); New buy: Public Storage (PSA); Sold out: Louisiana-pacific CORP (LPX); New buy: Iron Mountain INC (IRM)

What sectors does Bamco INC /ny/ focus on?

Bamco INC /ny/ is concentrated in the following sectors based on its current disclosed equity portfolio: • Consumer Discretionary: 54.4% • Information Technology: 20.2% • Financials: 10.3% • Real Estate: 6.7% • Communication Services: 3.0% • Industrials: 3.0%