BAMCO INC /NY/

View all activity View 13F on SEC

Data as of Q4 2025

Institutional investor tracked via SEC 13F filings. Portfolio snapshot as of 2025-12-31.SEC EDGAR Source

Assets Under Management

$36.9B

Total Positions

327

New This Quarter

Filing Period

2025-12-31

Portfolio Allocation

Top holdings by portfolio weight

TSLA14.53%

ACGL4.67%

MSCI4.28%

CSGP3.55%

IDXX3.30%

IT2.88%

GWRE2.80%

H2.65%

FDS2.27%

RRR2.10%

Other18.81%

Position Outcomes

Best and worst performing positions by estimated return

Top Winners

VRT24Q held

Vertiv Holdings Co

Avg $13.06 · $233.8M est. P&L

Est. P&L

+1158.30%

GS29Q held

Goldman Sachs Group Inc/The

Avg $138.51 · $596,728 est. P&L

Est. P&L

+538.52%

GRAL7Q held

GRAIL INC

Avg $15.37 · $539,370 est. P&L

Est. P&L

+454.98%

Top Losers

Upgrade to Pro to see the worst-performing positions.

View plans

Cost basis estimates based on full filing history using quarter-end prices. Actual transaction prices are not disclosed in 13F filings.

Top Holdings(Showing 25 of 327 — sorted by value)

Export CSV(Pro)

Activity:

Stock	Shares	Value	Weight	Price Trend	Avg Buy	Est. P&L	Held	Conviction
TSLA Tesla Inc	11.9M	$5.4B	14.5%	—	$216.85	+109.56%	29 qtrs	Decreased 0
ACGL Arch Capital Group Ltd	18M	$1.7B	4.7%	—	$25.76	+275.28%	29 qtrs	Decreased 0
MSCI MSCI Inc	2.8M	$1.6B	4.3%	—	$268.80	+115.76%	29 qtrs	Increased 67
CSGP CoStar Group Inc	19.5M	$1.3B	3.6%	—	$77.66	-12.62%	29 qtrs	Increased 59
IDXX IDEXX Laboratories Inc	1.8M	$1.2B	3.3%	—	$203.47	+235.34%	29 qtrs	Decreased 0
IT Gartner Inc	4.2M	$1.1B	2.9%	—	$146.77	+73.46%	29 qtrs	Decreased 0
GWRE Guidewire Software Inc	5.1M	$1B	2.8%	—	$81.05	+149.88%	29 qtrs	Decreased 0
H Hyatt Hotels Corp	6.1M	$979M	2.7%	—	$77.49	+111.09%	29 qtrs	Decreased 0
FDS FactSet Research Systems Inc	2.9M	$838.3M	2.3%	—	$232.45	+25.36%	29 qtrs	Increased 78
RRR Red Rock Resorts Inc	12.5M	$775.6M	2.1%	—	$28.42	+121.80%	29 qtrs	Increased 55
SCHW Charles Schwab Corp/The	7.1M	$705.4M	1.9%	—	$40.44	+147.81%	29 qtrs	Decreased 0
CHH Choice Hotels International Inc	7.4M	$703.6M	1.9%	—	$81.47	+17.84%	29 qtrs	Increased 65
KNSL Kinsale Capital Group Inc	1.8M	$696.7M	1.9%	—	$92.61	+327.18%	29 qtrs	Decreased 0
FIGS FIGS INC	60M	$681.1M	1.8%	—	$7.26	+59.61%	19 qtrs	Increased 50
MTN Vail Resorts Inc	4.8M	$638.8M	1.7%	—	$171.63	-22.39%	29 qtrs	Decreased 0
SPOT Spotify Technology SA	997,291	$579.1M	1.6%	—	$266.55	+116.35%	29 qtrs	Increased 50
NVDA NVIDIA Corp	3M	$557.4M	1.5%	—	$112.64	+66.49%	29 qtrs	Increased 49
SHOP Shopify Inc	2.3M	$368.3M	1.0%	—	$50.45	+224.58%	25 qtrs	Increased 44
BIRK BIRKENSTOCK HOLDING PLC	8M	$325.8M	0.9%	—	$46.38	-11.06%	9 qtrs	Increased 54
IBKR Interactive Brokers Group Inc	4.6M	$298.6M	0.8%	—	$49.13	+32.31%	12 qtrs	Increased 44
PRI Primerica Inc	1.1M	$292.6M	0.8%	—	$87.48	+197.78%	29 qtrs	Decreased 0
VRSK Verisk Analytics Inc	1.3M	$291.4M	0.8%	—	$125.82	+78.32%	29 qtrs	Increased 47
AMZN Amazon.com Inc	1.2M	$282.8M	0.8%	—	$129.28	+79.87%	29 qtrs	Increased 49
MORN Morningstar Inc	1.2M	$269.9M	0.7%	—	$130.00	+67.31%	29 qtrs	Decreased 0
SITE SITEONE LANDSCAPE SUPPLY INC	2M	$252.7M	0.7%	—	$98.80	+28.22%	29 qtrs	Increased 45
Showing 25 of 327 results.PROUpgrade to see all →

Accumulation Streaks

Positions with 2+ consecutive quarters of increases — persistent directional conviction.

Security

JLLJones Lang LaSalle Inc

Q1 2024 → Q4 2025+343,982 shares+$148.3M

BIRKBIRKENSTOCK HOLDING PLC

Q1 2024 → Q4 2025+5M shares+$182.8M

ACLXARCELLX INC

Q1 2024 → Q4 2025+546,197 shares+$36.2M

Upgrade to Pro to see all accumulation streaks

Data sourced from SEC EDGAR 13F filings. Not financial advice. Full disclaimer