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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 | |
|---|---|---|---|---|---|---|
3501
Tiziana Life Sciences
TLSA
$114M
| $21.6K | ﹤0.01% |
10,000
| – | – |
|
3502
iPower
IPW
$1.27M
| $21.1K | ﹤0.01% |
170
| – | – |
|
3503
Xilio Therapeutics
XLO
$56.9M
| $21.1K | ﹤0.01% |
1,786
| – | – |
|
3504
Oxford Square Capital
OXSQ
$151M
| $20.2K | ﹤0.01% |
12,693
+1,521
| +14% | +$3.34K |
|
3505
Lineage Cell Therapeutics
LCTX
$257M
| $18.9K | ﹤0.01% |
11,195
-1,778
| -14% | -$2.1K |
|
3506
SES AI
SES
$186M
| $18.7K | ﹤0.01% |
11,222
-40,051
| -78% | -$47.9K |
|
|
FSP
3507
Franklin Street Properties
FSP
$44.8M
| $18.7K | ﹤0.01% |
+11,666
| New | +$19.3K |
|
|
HYFT
3508
MindWalk Holdings
HYFT
$63.5M
| $17.5K | ﹤0.01% |
10,000
| – | – |
|
3509
Compugen
CGEN
$216M
| $17.2K | ﹤0.01% |
11,690
| – | – |
|
|
FARM
3510
DELISTED
Farmer Brothers
FARM
| $17.1K | ﹤0.01% |
+10,004
| New | +$17.3K |
|
3511
Rackspace Technology
RXT
$1B
| $16.9K | ﹤0.01% |
+12,003
| New | +$16.1K |
|
3512
Advantage Solutions
ADV
$484M
| $16.9K | ﹤0.01% |
441
+33
| +8% | +$1.37K |
|
|
AUTL
3513
Autolus Therapeutics
AUTL
$386M
| $16.8K | ﹤0.01% |
10,322
-8,625
| -46% | -$16.9K |
|
3514
Outdoor Holding Co
POWW
$239M
| $15K | ﹤0.01% |
10,155
-1,461
| -13% | -$1.95K |
|
|
CGC
3515
Canopy Growth
CGC
$375M
| $15K | ﹤0.01% |
+10,260
| New | +$13.3K |
|
|
SACH
3516
Sachem Capital Corp
SACH
$38.4M
| $15K | ﹤0.01% |
13,470
-300
| -2% | -$358 |
|
3517
Pacific Biosciences
PACB
$422M
| $14.6K | ﹤0.01% |
11,396
-4,030
| -26% | -$5.46K |
|
|
BNKK
3518
Bonk Inc
BNKK
$8.96M
| $14.4K | ﹤0.01% |
1,533
+293
| +24% | +$5.35K |
|
|
NAK
3519
Northern Dynasty Minerals
NAK
$885M
| $14.3K | ﹤0.01% |
+11,952
| New | +$12.8K |
|
3520
BARK
BARK
$74.8M
| $13.1K | ﹤0.01% |
786
-132
| -14% | -$2.33K |
|
3521
Generation Income Properties
GIPR
$671K
| $12.4K | ﹤0.01% |
1,352
-58
| -4% | -$668 |
|
3522
Adicet Bio
ACET
$72.8M
| $12K | ﹤0.01% |
+928
| New | +$10.9K |
|
|
DVLT
3523
Datavault AI
DVLT
$306M
| $11.1K | ﹤0.01% |
+10,370
| New | +$5.5K |
|
|
ILS
3524
Brookmont Catastrophic Bond ETF
ILS
$79.4M
| $9.22K | ﹤0.01% |
+30,444
| New | +$611K |
|
|
ODVWZ
3525
DELISTED
Osisko Development Corp Warrant
ODVWZ
| $7.2K | ﹤0.01% |
+26,666
| New | +$6.75K |
|
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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.