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Mariner Portfolio holdings
AUM
$85.7B
1-Year Est. Return
24.21%
This Fund
S&P 500
This Quarter
Est. Return
+9.26%
1 Year Est. Return
+24.21%
3 Year Est. Return
+74.24%
5 Year Est. Return
+87.67%
10 Year Est. Return
+269.13%
AUM
$77.4B
AUM Growth
+$8.11B
(+12%)
Cap. Flow
+$3.32B
Cap. Flow
% of AUM
4.29%
Top 10 Holdings %
Top 10 Hldgs %
28.04%
Holding
3,806
New
339
Increased
1,836
Reduced
1,278
Closed
264
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
ProShares Ultra Semiconductors
USD
|
+$770M |
| 2 |
NVIDIA
NVDA
|
+$373M |
| 3 |
Meta Platforms (Facebook)
META
|
+$179M |
| 4 |
Teledyne Technologies
TDY
|
+$167M |
| 5 |
Apple
AAPL
|
+$155M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Take-Two Interactive
TTWO
|
+$189M |
| 2 |
lululemon athletica
LULU
|
+$80.3M |
| 3 |
iShares 0-1 Year Treasury Bond ETF
SHV
|
+$79.8M |
| 4 |
Arch Capital
ACGL
|
+$42.3M |
| 5 |
Advanced Micro Devices
AMD
|
+$38.4M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 22.54% |
| 2 | Financials | 7.9% |
| 3 | Consumer Discretionary | 5.38% |
| 4 | Communication Services | 4.83% |
| 5 | Healthcare | 4.73% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
3351
Harmonic Inc
HLIT
$1.21B
| $102K | ﹤0.01% |
+10,021
| New | +$94.4K |
|
3352
Monte Rosa Therapeutics
GLUE
$1.92B
| $102K | ﹤0.01% |
13,763
-1,096
| -7% | -$5.8K |
|
3353
Enel Chile
ENIC
$5.96B
| $102K | ﹤0.01% |
26,145
+3,461
| +15% | +$12.1K |
|
3354
Opendoor
OPEN
$3.69B
| $101K | ﹤0.01% |
13,102
+483
| +4% | +$1.96K |
|
3355
Prime Medicine
PRME
$533M
| $101K | ﹤0.01% |
+18,219
| New | +$74K |
|
3356
Liberty Latin America Class C
LILAK
$1.5B
| $100K | ﹤0.01% |
+13,071
| New | +$89.2K |
|
3357
FIGS
FIGS
$1.59B
| $100K | ﹤0.01% |
+14,979
| New | +$98.8K |
|
3358
American Express Global Business Travel
GBTG
$4.91B
| $100K | ﹤0.01% |
+12,397
| New | +$91.8K |
|
3359
Helix Energy Solutions
HLX
$1.46B
| $100K | ﹤0.01% |
15,260
-6,452
| -30% | -$40.6K |
|
|
ORIO
3360
Orion Digital Corp
ORIO
$15.4M
| $100K | ﹤0.01% |
55,305
-300,333
| -84% | -$548K |
|
3361
Redwire
RDW
$2.08B
| $99.7K | ﹤0.01% |
+11,094
| New | +$130K |
|
3362
Prospect Capital
PSEC
$1.06B
| $99K | ﹤0.01% |
35,986
-20,107
| -36% | -$60.1K |
|
3363
Capricor Therapeutics
CAPR
$1.14B
| $98.1K | ﹤0.01% |
+13,609
| New | +$100K |
|
3364
MBIA
MBI
$288M
| $98K | ﹤0.01% |
13,149
+679
| +5% | +$4.3K |
|
3365
RUM Group Inc
RUM
$1.57B
| $97.6K | ﹤0.01% |
13,474
+705
| +6% | +$5.76K |
|
|
ZTR
3366
Virtus Total Return Fund
ZTR
$340M
| $97.3K | ﹤0.01% |
15,078
+984
| +7% | +$6.16K |
|
|
SSII
3367
SS Innovations International
SSII
$696M
| $96.5K | ﹤0.01% |
14,840
| – | – |
|
3368
Rocket Pharmaceuticals
RCKT
$348M
| $96.1K | ﹤0.01% |
29,466
+6,402
| +28% | +$20.2K |
|
3369
Denison Mines
DNN
$2.63B
| $95.9K | ﹤0.01% |
34,872
-2,846
| -8% | -$6.29K |
|
|
SFIX
3370
Stitch Fix
SFIX
$478M
| $94.6K | ﹤0.01% |
+21,751
| New | +$107K |
|
3371
8x8 Inc
EGHT
$247M
| $93.8K | ﹤0.01% |
44,228
+30,140
| +214% | +$60.6K |
|
3372
Kosmos Energy
KOS
$1.56B
| $93.7K | ﹤0.01% |
56,471
-46,594
| -45% | -$87.2K |
|
3373
Cytek Biosciences
CTKB
$576M
| $93.3K | ﹤0.01% |
26,902
+9,663
| +56% | +$36.3K |
|
|
GGN
3374
GAMCO Global Gold, Natural Resources & Income Trust
GGN
$767M
| $92.9K | ﹤0.01% |
18,017
+2,224
| +14% | +$10.4K |
|
|
LAND
3375
Gladstone Land Corp
LAND
$368M
| $92.7K | ﹤0.01% |
+10,116
| New | +$95.6K |
|
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Mariner's Q3 2025 Portfolio in Review
As of Q3 2025, Mariner held 3,806 positions worth $77.4B, up 12% from $69.3B the previous quarter. Its ten largest holdings account for 28% of the portfolio.
Mariner deployed $3.32B of net new capital in Q3 2025, opening 339 new positions and adding to 1,836 existing holdings. Its largest new stake was ProShares Ultra Semiconductors: 17,808,292 shares worth $8.97M.
By sector, the portfolio is most concentrated in Technology at 23% of assets, up from 21% a quarter earlier, followed by Financials and Consumer Discretionary.
On the sell side, the largest reduction was Take-Two Interactive, an estimated $189M trimmed.
- Mariner's largest Q3 2025 buy was ProShares Ultra Semiconductors: 17,808,292 shares worth $8.97M.
- Mariner added most to NVIDIA in Q3 2025, an estimated $373M increase.
- Mariner's biggest Q3 2025 reduction was Take-Two Interactive, cutting an estimated $189M.
- Mariner fully exited Hess in Q3 2025, selling an estimated $5.21M.
- Mariner's ten largest holdings make up 28% of its $77.4B portfolio in Q3 2025.
- Mariner opened 339 new positions and closed 264 in Q3 2025.
- Mariner's portfolio value rose 12% quarter-over-quarter to $77.4B.
Based on Mariner's 13F filing for Q3 2025, filed 14 Nov 2025.