2026 Q1 Portfolio Activity
In 2026 Q1, BAMCO INC /NY/ maintained a portfolio of 363 distinct positions. The most significant new addition was PUBLIC STORAGE OPER CO, now representing 0.22% of the total fund value. They heavily accumulated shares in SHOPIFY INC, increasing the position by 106.2%. The fund also reduced its exposure to CLEARWATER ANALYTICS HLDGS I by 98.0%.
Position History
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Total Positions
363
Quarter
2026 Q1
Top Holding
TSLA (13.4%)
Top 10 Concentration
41.5%
Turnover Rate
23.4%
Sector HHI
0.18
Items per page:
Showing 1-50 of 363
BAMCO INC /NY/ Full Holdings List — 2026 Q1
| Stock | History | Sector / Type | Port % | Prev % | Rank / Prev | Conviction | Change | % Change | Influence | Shares | Mkt Value | Avg Cost | Price Held | 1st Owned | Source | Source Date | Date Reported | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
TSLA
TESLA INC
|
Consumer Cyclical | 13.39% | 14.53% |
#1
Prev: #1
|
6.5 |
—
|
6,034 | 0.1% |
P
S
|
11,933,509 | $4,436,281,971 | 2012 Q2 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
ACGL
ARCH CAP GROUP ...
|
Financial Services | 4.84% | 4.67% |
#2
Prev: #2
|
3.9 |
—
|
-1,277,746 | -7.1% |
P
S
|
16,709,759 | $1,603,969,766 | 2002 Q2 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
MSCI
MSCI INC
|
Financial Services | 4.39% | 4.28% |
#3
Prev: #3
|
3.3 |
—
|
-56,358 | -2.0% |
P
S
|
2,699,389 | $1,454,997,665 | 2007 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
GWRE
GUIDEWIRE SOFTW...
|
Technology | 2.98% | 2.80% |
#4
3
Prev: #7
|
4.2 |
—
|
1,449,903 | 28.2% |
P
S
|
6,597,453 | $986,715,071 | 2012 Q2 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
IT
GARTNER INC
|
Technology | 2.83% | 2.88% |
#5
1
Prev: #6
|
4.1 |
—
|
1,704,659 | 40.5% |
P
S
|
5,917,616 | $936,995,317 | 2005 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
IDXX
IDEXX LABS INC
|
Healthcare | 2.77% | 3.30% |
#6
1
Prev: #5
|
1.6 |
—
|
-164,674 | -9.2% |
P
S
|
1,633,367 | $917,772,584 | 2005 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
H
HYATT HOTELS CO...
|
Consumer Cyclical | 2.75% | 2.65% |
#7
1
Prev: #8
|
1.6 |
—
|
235,188 | 3.9% |
P
S
|
6,341,673 | $911,869,161 | 2009 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
FIGS
FIGS INC
|
Consumer Cyclical | 2.67% | 1.85% |
#8
6
Prev: #14
|
2.1 |
—
|
no change | no change |
P
S
|
59,959,449 | $885,601,062 | 2021 Q2 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
FDS
FACTSET RESH SY...
|
Financial Services | 2.46% | 2.27% |
#9
Prev: #9
|
3.5 |
—
|
867,742 | 30.0% |
P
S
|
3,756,587 | $815,141,813 | 2006 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
CHH
CHOICE HOTELS I...
|
Consumer Cyclical | 2.40% | 1.91% |
#10
2
Prev: #12
|
1.5 |
—
|
303,919 | 4.1% |
P
S
|
7,690,494 | $795,966,129 | 1999 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
RRR
RED ROCK RESORT...
|
Consumer Cyclical | 2.16% | 2.10% |
#11
1
Prev: #10
|
2.9 |
—
|
892,954 | 7.1% |
P
S
|
13,412,846 | $715,709,463 | 2016 Q2 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
SCHW
SCHWAB CHARLES ...
|
Financial Services | 2.12% | 1.91% |
#12
1
Prev: #11
|
2.8 |
—
|
404,007 | 5.7% |
P
S
|
7,464,316 | $701,496,418 | 1999 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
KNSL
KINSALE CAP GRO...
|
Financial Services | 2.09% | 1.89% |
#13
Prev: #13
|
2.8 |
—
|
246,564 | 13.8% |
P
S
|
2,027,765 | $692,806,190 | 2016 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
CSGP
COSTAR GROUP IN...
|
Real Estate | 1.99% | 3.55% |
#14
10
Prev: #4
|
1.3 |
—
|
-3,183,924 | -16.3% |
P
S
|
16,314,175 | $658,113,819 | 2001 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
MTN
VAIL RESORTS IN...
|
Consumer Cyclical | 1.95% | 1.73% |
#15
Prev: #15
|
1.3 |
—
|
233,605 | 4.9% |
P
S
|
5,043,533 | $647,186,155 | 1999 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
SPOT
SPOTIFY TECHNOL...
|
Communication Services | 1.93% | 1.57% |
#16
Prev: #16
|
3.3 |
—
|
322,234 | 32.3% |
P
S
|
1,319,525 | $639,850,868 | 2018 Q2 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
SHOP
SHOPIFY INC
|
Technology | 1.69% | 1.00% |
#17
1
Prev: #18
|
3.7 |
—
|
2,429,960 | 106.2% |
P
S
|
4,718,230 | $559,676,443 | 2015 Q2 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
NVDA
NVIDIA CORPORAT...
|
Technology | 1.54% | 1.51% |
#18
1
Prev: #17
|
1.1 |
—
|
-69,185 | -2.3% |
P
S
|
2,919,758 | $509,205,795 | 2018 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
VRSK
VERISK ANALYTIC...
|
Industrials | 1.44% | 0.79% |
#19
3
Prev: #22
|
3.6 |
—
|
1,209,365 | 92.8% |
P
S
|
2,511,976 | $476,647,446 | 2009 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
BIRK
BIRKENSTOCK HOL...
|
Consumer Cyclical | 1.01% | 0.88% |
#20
1
Prev: #19
|
2.4 |
—
|
1,400,031 | 17.6% |
P
S
|
9,366,068 | $335,586,216 | 2023 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
ONON
ON HLDG AG
|
Consumer Cyclical | 1.00% | 0.68% |
#21
5
Prev: #26
|
3.4 |
—
|
4,309,119 | 79.7% |
P
S
|
9,714,605 | $330,490,862 | 2022 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
VRT
VERTIV HOLDINGS...
|
Industrials | 0.89% | 0.68% |
#22
5
Prev: #27
|
0.4 |
—
|
-364,428 | -23.6% |
P
S
|
1,181,144 | $295,971,064 | 2020 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
SITE
SITEONE LANDSCA...
|
Industrials | 0.83% | 0.68% |
#23
2
Prev: #25
|
0.8 |
—
|
30,710 | 1.5% |
P
S
|
2,059,076 | $274,083,606 | 2016 Q2 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
IBKR
INTERACTIVE BRO...
|
Financial Services | 0.82% | 0.81% |
#24
4
Prev: #20
|
0.8 |
—
|
-596,000 | -12.8% |
P
S
|
4,047,376 | $271,457,508 | 2009 Q2 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
AMZN
AMAZON COM INC
|
Consumer Cyclical | 0.81% | 0.77% |
#25
2
Prev: #23
|
2.3 |
—
|
69,495 | 5.7% |
P
S
|
1,294,654 | $269,637,589 | 2000 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
WELL
WELLTOWER INC
|
Real Estate | 0.80% | 0.64% |
#26
2
Prev: #28
|
2.3 |
—
|
67,449 | 5.3% |
P
S
|
1,344,941 | $265,908,285 | 2018 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
EQIX
EQUINIX INC
|
Real Estate | 0.72% | 0.30% |
#27
33
Prev: #60
|
3.3 |
—
|
98,546 | 67.8% |
P
S
|
243,975 | $239,154,054 | 2004 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
PRI
PRIMERICA INC
|
Financial Services | 0.65% | 0.79% |
#28
7
Prev: #21
|
0.3 |
—
|
-272,518 | -24.1% |
P
S
|
860,026 | $215,419,312 | 2010 Q2 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
TSM
TAIWAN SEMICOND...
|
Technology | 0.65% | 0.52% |
#29
4
Prev: #33
|
0.8 |
—
|
1,615 | 0.3% |
P
S
|
636,267 | $215,026,433 | 2013 Q2 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
APH
AMPHENOL CORP
|
Technology | 0.63% | 0.63% |
#30
1
Prev: #29
|
0.8 |
—
|
-51,052 | -3.0% |
P
S
|
1,659,690 | $209,701,831 | 2019 Q2 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
GDS
GDS HLDGS LTD
|
Technology | 0.56% | 0.36% |
#31
21
Prev: #52
|
2.7 |
—
|
812,398 | 21.5% |
P
S
|
4,597,246 | $185,223,041 | 2018 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
ABNB
AIRBNB INC
|
Consumer Cyclical | 0.55% | 0.32% |
#32
24
Prev: #56
|
3.2 |
—
|
561,145 | 63.8% |
P
S
|
1,441,221 | $181,997,388 | 2020 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
PWR
QUANTA SVCS INC
|
Industrials | 0.54% | 0.38% |
#33
16
Prev: #49
|
0.7 |
—
|
-2,170 | -0.7% |
P
S
|
325,840 | $178,892,677 | 2000 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
WYNN
WYNN RESORTS LT...
|
Consumer Cyclical | 0.53% | 0.40% |
#34
10
Prev: #44
|
2.7 |
—
|
517,266 | 42.4% |
P
S
|
1,736,856 | $176,377,727 | 2002 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
MTD
METTLER TOLEDO ...
|
Healthcare | 0.51% | 0.55% |
#35
4
Prev: #31
|
0.7 |
—
|
-12,695 | -8.7% |
P
S
|
133,639 | $168,545,507 | 2008 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
IOT
SAMSARA INC
|
Technology | 0.49% | 0.40% |
#36
9
Prev: #45
|
2.7 |
—
|
999,804 | 24.3% |
P
S
|
5,119,835 | $162,247,571 | 2024 Q2 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
AVGO
BROADCOM INC
|
Technology | 0.49% | 0.50% |
#37
1
Prev: #36
|
0.7 |
—
|
-14,621 | -2.7% |
P
S
|
523,219 | $161,941,513 | 2000 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
HLI
HOULIHAN LOKEY ...
|
Financial Services | 0.46% | 0.53% |
#38
6
Prev: #32
|
0.7 |
—
|
-62,548 | -5.6% |
P
S
|
1,061,403 | $152,438,699 | 2017 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
META
META PLATFORMS ...
|
Communication Services | 0.44% | 0.48% |
#39
2
Prev: #37
|
0.7 |
—
|
-13,426 | -5.0% |
P
S
|
256,700 | $146,865,771 | 2012 Q2 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
CBRE
CBRE GROUP INC
|
Real Estate | 0.44% | 0.59% |
#40
10
Prev: #30
|
0.2 |
—
|
-284,881 | -21.0% |
P
S
|
1,074,451 | $145,545,132 | 2011 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
LLYVK
LIBERTY LIVE HO...
|
Communication Services | 0.43% | 0.36% |
#41
10
Prev: #51
|
0.7 |
—
|
-88,193 | -5.5% |
P
S
|
1,525,473 | $143,562,264 | 2023 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
PLD
PROLOGIS INC.
|
Real Estate | 0.43% | 0.38% |
#42
5
Prev: #47
|
0.7 |
—
|
-43,380 | -3.9% |
P
S
|
1,065,747 | $140,870,438 | 2014 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
N/A
FORGENT POWER S...
|
|
Unknown | 0.41% | — |
#43
Prev: #—
|
3.7 |
—
|
4,674,583 | — |
NEW
|
4,674,583 | $136,825,044 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
LOAR
LOAR HOLDINGS I...
|
Industrials | 0.41% | 0.39% |
#44
2
Prev: #46
|
2.2 |
—
|
246,794 | 11.6% |
P
S
|
2,366,299 | $135,565,270 | 2024 Q2 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
MORN
MORNINGSTAR INC
|
Financial Services | 0.39% | 0.73% |
#45
21
Prev: #24
|
0.2 |
—
|
-482,279 | -38.8% |
P
S
|
759,515 | $128,396,011 | 2005 Q2 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
TOL
TOLL BROTHERS I...
|
Consumer Cyclical | 0.38% | 0.43% |
#46
5
Prev: #41
|
0.2 |
—
|
-234,239 | -20.1% |
P
S
|
932,031 | $127,194,271 | 2004 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
BN
BROOKFIELD CORP
|
Financial Services | 0.35% | 0.45% |
#47
9
Prev: #38
|
0.1 |
—
|
-730,407 | -20.1% |
P
S
|
2,905,510 | $117,585,990 | 2022 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
GOOGL
ALPHABET INC
|
Communication Services | 0.33% | 0.13% |
#48
89
Prev: #137
|
3.1 |
—
|
225,079 | 142.9% |
P
S
|
382,577 | $110,013,842 | 2015 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
NOVT
NOVANTA INC
|
Technology | 0.33% | 0.30% |
#49
10
Prev: #59
|
0.6 |
—
|
-21,879 | -2.3% |
P
S
|
915,083 | $108,080,453 | 2017 Q2 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
KRMN
KARMAN HLDGS IN...
|
Industrials | 0.31% | 0.38% |
#50
2
Prev: #48
|
0.1 |
—
|
-635,128 | -33.2% |
P
S
|
1,279,093 | $102,391,395 | 2025 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 |
Showing 1-50 of 363 holdings