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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 | |
|---|---|---|---|---|---|---|
|
BLDP
3426
Ballard Power Systems
BLDP
$874M
| $59.2K | ﹤0.01% |
21,763
+318
| +1% | +$651 |
|
3427
Gossamer Bio
GOSS
$66.5M
| $59.1K | ﹤0.01% |
+22,469
| New | +$49.5K |
|
3428
iQIYI
IQ
$1.18B
| $58.6K | ﹤0.01% |
22,908
+10,691
| +88% | +$23.7K |
|
|
LPRO
3429
Open Lending Corp
LPRO
$373M
| $58.3K | ﹤0.01% |
27,620
+2,890
| +12% | +$6.53K |
|
3430
Upexi
UPXI
$58.8M
| $57.7K | ﹤0.01% |
+10,000
| New | +$60.8K |
|
|
CXE
3431
DELISTED
MFS High Income Municipal Trust
CXE
| $57.6K | ﹤0.01% |
15,485
+230
| +2% | +$824 |
|
3432
374Water
SCWO
$37.8M
| $57.6K | ﹤0.01% |
20,075
+1,987
| +11% | +$5.44K |
|
3433
Commercial Vehicle Group
CVGI
$157M
| $56.5K | ﹤0.01% |
33,258
-118
| -0.4% | -$216 |
|
3434
Milestone Scientific
MLSS
$34.5M
| $55.3K | ﹤0.01% |
121,750
-75,000
| -38% | -$43.9K |
|
3435
Mobix Labs
MOBX
$27.5M
| $53.7K | ﹤0.01% |
6,657
| – | – |
|
3436
Biote Corp
BTMD
$69.2M
| $53.5K | ﹤0.01% |
17,840
-1,377
| -7% | -$4.92K |
|
3437
Microvision
MVIS
$88.2M
| $53K | ﹤0.01% |
42,754
-3,181
| -7% | -$3.79K |
|
3438
FerroAtlántica
GSM
$628M
| $52K | ﹤0.01% |
+11,436
| New | +$49K |
|
3439
CAMP4 Therapeutics
CAMP
$164M
| $51.9K | ﹤0.01% |
+17,298
| New | +$32K |
|
|
AMIX
3440
Autonomix Medical
AMIX
$1.59M
| $50.2K | ﹤0.01% |
4,793
| – | – |
|
3441
Talkspace
TALK
$873M
| $50.1K | ﹤0.01% |
18,158
-3,311
| -15% | -$8.57K |
|
3442
Milestone Pharmaceuticals
MIST
$144M
| $50K | ﹤0.01% |
25,000
+14,000
| +127% | +$24.6K |
|
3443
Arbe Robotics
ARBE
$83.1M
| $49.3K | ﹤0.01% |
29,852
-414
| -1% | -$603 |
|
|
FRMM
3444
Forum Markets
FRMM
$75.7M
| $49K | ﹤0.01% |
+2,035
| New | +$60.9K |
|
3445
Accuray
ARAY
$28.4M
| $48.7K | ﹤0.01% |
29,163
-502
| -2% | -$743 |
|
3446
Iovance Biotherapeutics
IOVA
$2.23B
| $48.4K | ﹤0.01% |
+22,291
| New | +$52.6K |
|
3447
Strive Inc
ASST
$961M
| $47K | ﹤0.01% |
940
+98
| +12% | +$9.31K |
|
3448
indie Semiconductor
INDI
$733M
| $46.6K | ﹤0.01% |
11,458
-10,015
| -47% | -$41.3K |
|
3449
The Honest Company
HNST
$417M
| $46.1K | ﹤0.01% |
12,528
-22,572
| -64% | -$95.7K |
|
3450
Zevia
ZVIA
$108M
| $46.1K | ﹤0.01% |
16,939
-1,786
| -10% | -$5.14K |
|
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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.