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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
-0.96%
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
$85.7B
AUM Growth
+$1.66B
(+2%)
Cap. Flow
+$4.07B
Cap. Flow
% of AUM
4.75%
Top 10 Holdings %
Top 10 Hldgs %
27.24%
Holding
3,909
New
385
Increased
1,802
Reduced
1,276
Closed
364
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apollo Global Management
APO
|
+$274M |
| 2 |
iShares 3-7 Year Treasury Bond ETF
IEI
|
+$184M |
| 3 |
Microsoft
MSFT
|
+$172M |
| 4 |
Vanguard FTSE Developed Markets ETF
VEA
|
+$170M |
| 5 |
iShares Core US Aggregate Bond ETF
AGG
|
+$169M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
iShares 7-10 Year Treasury Bond ETF
IEF
|
+$179M |
| 2 |
T-Mobile US
TMUS
|
+$162M |
| 3 |
ProShares Ultra Semiconductors
USD
|
+$135M |
| 4 |
ServiceNow
NOW
|
+$128M |
| 5 |
Abbott
ABT
|
+$126M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 21.37% |
| 2 | Financials | 7.66% |
| 3 | Healthcare | 5.22% |
| 4 | Consumer Discretionary | 5.2% |
| 5 | Industrials | 4.64% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
3226
Energy Transfer LP Series I Preferred Units
ET.PRI
$478M
| $159K | ﹤0.01% |
+13,718
| New | +$161K |
|
|
NXDR
3227
Nextdoor Holdings
NXDR
$885M
| $157K | ﹤0.01% |
112,394
+81,489
| +264% | +$142K |
|
3228
Aldeyra Therapeutics
ALDX
$103M
| $155K | ﹤0.01% |
91,870
+68,994
| +302% | +$302K |
|
3229
Quantum-Si Incorporated
QSI
$174M
| $155K | ﹤0.01% |
199,692
+142,812
| +251% | +$148K |
|
3230
Genius Sports
GENI
$1.7B
| $154K | ﹤0.01% |
34,819
+22,446
| +181% | +$160K |
|
3231
Keros Therapeutics
KROS
$202M
| $153K | ﹤0.01% |
13,826
-1,385
| -9% | -$21.4K |
|
|
NAVN
3232
Navan Inc
NAVN
$5.99B
| $152K | ﹤0.01% |
+11,465
| New | +$136K |
|
3233
Wave Life Sciences
WVE
$1.1B
| $151K | ﹤0.01% |
+20,891
| New | +$272K |
|
3234
ProPetro Holding
PUMP
$1.67B
| $151K | ﹤0.01% |
+10,499
| New | +$126K |
|
|
SBI
3235
Western Asset Intermediate Muni Fund
SBI
$110M
| $151K | ﹤0.01% |
19,618
| – | – |
|
|
UMH
3236
UMH Properties
UMH
$1.32B
| $151K | ﹤0.01% |
10,434
-4,504
| -30% | -$69.7K |
|
|
PONY
3237
Pony AI Inc
PONY
$2.97B
| $150K | ﹤0.01% |
+15,933
| New | +$220K |
|
|
ETHT
3238
ProShares Ultra Ether ETF
ETHT
$213M
| $150K | ﹤0.01% |
+10,025
| New | +$233K |
|
|
CRF
3239
Cornerstone Total Return Fund
CRF
$1.15B
| $150K | ﹤0.01% |
21,577
+226
| +1% | +$1.7K |
|
|
DHLX
3240
Diamond Hill Large Cap Concentrated ETF
DHLX
$89.7M
| $150K | ﹤0.01% |
11,687
| – | – |
|
|
GGN
3241
GAMCO Global Gold, Natural Resources & Income Trust
GGN
$748M
| $149K | ﹤0.01% |
28,267
+2,040
| +8% | +$11.1K |
|
3242
Zura Bio
ZURA
$513M
| $147K | ﹤0.01% |
24,734
-11,882
| -32% | -$71.8K |
|
3243
SLR Investment Corp
SLRC
$717M
| $147K | ﹤0.01% |
10,247
-1,351
| -12% | -$20K |
|
3244
Real Brokerage
REAX
$410M
| $147K | ﹤0.01% |
58,618
+26,946
| +85% | +$81.5K |
|
3245
Nuveen California Municipal Value Fund
NCA
$302M
| $146K | ﹤0.01% |
+15,614
| New | +$146K |
|
3246
NewtekOne
NEWT
$426M
| $146K | ﹤0.01% |
13,339
+2,631
| +25% | +$33.4K |
|
3247
Ooma
OOMA
$556M
| $146K | ﹤0.01% |
+10,023
| New | +$126K |
|
3248
Rezolute
RZLT
$481M
| $146K | ﹤0.01% |
+47,752
| New | +$143K |
|
3249
Backblaze
BLZE
$805M
| $145K | ﹤0.01% |
+42,095
| New | +$177K |
|
3250
Patria Investments
PAX
$1.74B
| $145K | ﹤0.01% |
11,525
-5,003
| -30% | -$70.4K |
|
Similar funds
Mariner's Q1 2026 Portfolio in Review
As of Q1 2026, Mariner held 3,909 positions worth $85.7B, up 2% from $84B the previous quarter. Its ten largest holdings account for 27% of the portfolio.
Mariner deployed $4.07B of net new capital in Q1 2026, opening 385 new positions and adding to 1,802 existing holdings. Its largest new stake was BNY Mellon Dynamic Value ETF: 960,263 shares worth $28.5M.
By sector, the portfolio is most concentrated in Technology at 21% of assets, down from 23% a quarter earlier, followed by Financials and Healthcare.
On the sell side, the largest reduction was iShares 7-10 Year Treasury Bond ETF, an estimated $179M trimmed.
- Mariner's largest Q1 2026 buy was BNY Mellon Dynamic Value ETF: 960,263 shares worth $28.5M.
- Mariner added most to Apollo Global Management in Q1 2026, an estimated $274M increase.
- Mariner's biggest Q1 2026 reduction was iShares 7-10 Year Treasury Bond ETF, cutting an estimated $179M.
- Mariner fully exited Exact Sciences in Q1 2026, selling an estimated $11.1M.
- Mariner's ten largest holdings make up 27% of its $85.7B portfolio in Q1 2026.
- Mariner opened 385 new positions and closed 364 in Q1 2026.
- Mariner's portfolio value rose 2% quarter-over-quarter to $85.7B.
Based on Mariner's 13F filing for Q1 2026, filed 13 May 2026.