Mariner’s iShares MBS ETF MBB Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q1 | $21.4M | Buy |
225,629
+12,057
| +6% | +$1.15M | 0.03% | 448 |
|
|
2025
Q4 | $20.3M | Buy |
213,572
+6,834
| +3% | +$652K | 0.02% | 444 |
|
|
2025
Q3 | $19.7M | Sell |
206,738
-1,154
| -0.6% | -$108K | 0.03% | 423 |
|
|
2025
Q2 | $19.5M | Buy |
207,892
+2,828
| +1% | +$262K | 0.03% | 418 |
|
|
2025
Q1 | $19.2M | Buy |
205,064
+12,283
| +6% | +$1.14M | 0.03% | 384 |
|
|
2024
Q4 | $17.7M | Buy |
192,781
+13,710
| +8% | +$1.28M | 0.03% | 397 |
|
|
2024
Q3 | $17.2M | Buy |
179,071
+10,188
| +6% | +$963K | 0.03% | 395 |
|
|
2024
Q2 | $15.5M | Sell |
168,883
-1,972
| -1% | -$180K | 0.03% | 390 |
|
|
2024
Q1 | $15.8M | Buy |
170,855
+8,977
| +6% | +$830K | 0.03% | 380 |
|
|
2023
Q4 | $15.2M | Buy |
161,878
+80,996
| +100% | +$7.26M | 0.04% | 355 |
|
|
2023
Q3 | $7.18M | Sell |
80,882
-4,647
| -5% | -$425K | 0.02% | 527 |
|
|
2023
Q2 | $7.98M | Buy |
85,529
+823
| +1% | +$77.4K | 0.02% | 504 |
|
|
2023
Q1 | $8.02M | Buy |
84,706
+3,565
| +4% | +$337K | 0.02% | 501 |
|
|
2022
Q4 | $7.53M | Buy |
81,141
+34,721
| +75% | +$3.2M | 0.02% | 480 |
|
|
2022
Q3 | $4.25M | Sell |
46,420
-2,807
| -6% | -$272K | 0.02% | 555 |
|
|
2022
Q2 | $4.8M | Buy |
49,227
+17,105
| +53% | +$1.68M | 0.02% | 503 |
|
|
2022
Q1 | $3.27M | Buy |
32,122
+6,015
| +23% | +$628K | 0.01% | 589 |
|
|
2021
Q4 | $2.81M | Buy |
26,107
+14,866
| +132% | +$1.6M | 0.01% | 573 |
|
|
2021
Q3 | $1.22M | Sell |
11,241
-1,091
| -9% | -$118K | 0.01% | 654 |
|
|
2021
Q2 | $1.33M | Sell |
12,332
-2,099
| -15% | -$228K | 0.01% | 593 |
|
|
2021
Q1 | $1.56M | Buy |
14,431
+1,910
| +15% | +$209K | 0.01% | 508 |
|
|
2020
Q4 | $1.38M | Sell |
12,521
-703
| -5% | -$77.4K | 0.01% | 504 |
|
|
2020
Q3 | $1.46M | Sell |
13,224
-91
| -0.7% | -$10.1K | 0.01% | 424 |
|
|
2020
Q2 | $1.47M | Sell |
13,315
-7,791
| -37% | -$863K | 0.01% | 420 |
|
|
2020
Q1 | $2.33M | Buy |
+21,106
| New | +$2.3M | 0.03% | 347 |
|
|
2019
Q3 | – | Sell |
-2,649
| Closed | -$285K | – | 901 |
|
|
2019
Q2 | $285K | Buy |
+2,649
| New | +$282K | ﹤0.01% | 902 |
|
|
2016
Q4 | – | Sell |
-901
| Closed | -$99K | – | 700 |
|
|
2016
Q3 | $99K | Buy |
+901
| New | +$99K | ﹤0.01% | 603 |
|
|
2014
Q1 | – | Sell |
-12,570
| Closed | -$1.31M | – | 358 |
|
|
2013
Q4 | $1.31M | Buy |
+12,570
| New | +$1.33M | 0.16% | 126 |
|
|
2013
Q3 | – | Sell |
-5,769
| Closed | -$607K | – | 304 |
|
|
2013
Q2 | $607K | Buy |
+5,769
| New | +$617K | 0.13% | 153 |
|
Other funds holding MBB
TWIM
TCIIS
Mariner's MBB Position: Q1 2026 in Review
Mariner increased its iShares MBS ETF (MBB) stake by 5.6% in Q1 2026, buying an estimated $1.15M and bringing the position to 225,629 shares worth $21.4M. The position accounts for 0.03% of the portfolio, ranked #448.
Mariner first reported a position in MBB in Q2 2013 and has held it in 29 quarters since. 1,019 funds tracked by Wall St. Rank hold MBB as of Q1 2026.
- Mariner held 225,629 shares of iShares MBS ETF worth $21.4M as of Q1 2026.
- Mariner bought 12,057 iShares MBS ETF shares in Q1 2026, an estimated $1.15M.
- iShares MBS ETF made up 0.03% of Mariner's portfolio in Q1 2026, its #448 holding.
- Mariner first reported a position in iShares MBS ETF in Q2 2013 and has held it in 29 quarters since.
- 1,019 funds tracked by Wall St. Rank held iShares MBS ETF as of Q1 2026.
Based on Mariner's 13F filing for Q1 2026, filed 13 May 2026.