SEI Investments’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
Q2 | $225M | Buy |
2,380,025
+185,578
| +8% | +$17.5M | 0.2% | 86 |
|
|
2026
Q1 | $208M | Buy |
2,194,447
+108,361
| +5% | +$10.4M | 0.19% | 95 |
|
|
2025
Q4 | $199M | Sell |
2,086,086
-90,168
| -4% | -$8.6M | 0.2% | 88 |
|
|
2025
Q3 | $207M | Buy |
2,176,254
+240,833
| +12% | +$22.6M | 0.22% | 71 |
|
|
2025
Q2 | $182M | Sell |
1,935,421
-112,091
| -5% | -$10.4M | 0.21% | 74 |
|
|
2025
Q1 | $192M | Sell |
2,047,512
-9,663
| -0.5% | -$894K | 0.25% | 67 |
|
|
2024
Q4 | $189M | Buy |
2,057,175
+147,930
| +8% | +$13.8M | 0.24% | 68 |
|
|
2024
Q3 | $183M | Sell |
1,909,245
-478,511
| -20% | -$45.2M | 0.24% | 72 |
|
|
2024
Q2 | $219M | Buy |
2,387,756
+411,096
| +21% | +$37.4M | 0.31% | 54 |
|
|
2024
Q1 | $183M | Buy |
1,976,660
+100,010
| +5% | +$9.25M | 0.27% | 69 |
|
|
2023
Q4 | $177M | Buy |
1,876,650
+34,864
| +2% | +$3.13M | 0.28% | 64 |
|
|
2023
Q3 | $164M | Buy |
1,841,786
+131,566
| +8% | +$12M | 0.29% | 60 |
|
|
2023
Q2 | $160M | Buy |
1,710,220
+1,375,889
| +412% | +$129M | 0.28% | 65 |
|
|
2023
Q1 | $31.7M | Sell |
334,331
-4,721
| -1% | -$446K | 0.06% | 366 |
|
|
2022
Q4 | $31.4M | Buy |
339,052
+13,318
| +4% | +$1.23M | 0.07% | 316 |
|
|
2022
Q3 | $29.8M | Sell |
325,734
-1,017
| -0.3% | -$98.6K | 0.07% | 329 |
|
|
2022
Q2 | $31.9M | Buy |
326,751
+2,825
| +0.9% | +$277K | 0.07% | 308 |
|
|
2022
Q1 | $33M | Buy |
323,926
+12,332
| +4% | +$1.29M | 0.07% | 318 |
|
|
2021
Q4 | $33.5M | Buy |
311,594
+15,036
| +5% | +$1.62M | 0.06% | 318 |
|
|
2021
Q3 | $32.1M | Buy |
296,558
+50,114
| +20% | +$5.44M | 0.07% | 307 |
|
|
2021
Q2 | $26.7M | Buy |
246,444
+2,455
| +1% | +$266K | 0.06% | 326 |
|
|
2021
Q1 | $26.5M | Sell |
243,989
-130,821
| -35% | -$14.3M | 0.07% | 301 |
|
|
2020
Q4 | $41.3M | Buy |
374,810
+8,139
| +2% | +$896K | 0.11% | 184 |
|
|
2020
Q3 | $40.5M | Sell |
366,671
-38,416
| -9% | -$4.25M | 0.12% | 151 |
|
|
2020
Q2 | $44.8M | Buy |
405,087
+35,255
| +10% | +$3.9M | 0.14% | 131 |
|
|
2020
Q1 | $40.8M | Buy |
369,832
+42,408
| +13% | +$4.61M | 0.15% | 112 |
|
|
2019
Q4 | $35.4M | Buy |
327,424
+36,377
| +12% | +$3.93M | 0.11% | 180 |
|
|
2019
Q3 | $31.5M | Buy |
291,047
+36,266
| +14% | +$3.91M | 0.08% | 225 |
|
|
2019
Q2 | $27.4M | Buy |
254,781
+34,265
| +16% | +$3.65M | 0.09% | 226 |
|
|
2019
Q1 | $23.5M | Buy |
220,516
+47,451
| +27% | +$4.99M | 0.08% | 253 |
|
|
2018
Q4 | $17.9M | Buy |
173,065
+707
| +0.4% | +$72.7K | 0.06% | 330 |
|
|
2018
Q3 | $17.8M | Buy |
172,358
+16,610
| +11% | +$1.72M | 0.06% | 314 |
|
|
2018
Q2 | $16.2M | Buy |
155,748
+18,247
| +13% | +$1.89M | 0.06% | 366 |
|
|
2018
Q1 | $14.4M | Buy |
137,501
+28,711
| +26% | +$3.01M | 0.06% | 357 |
|
|
2017
Q4 | $11.6M | Buy |
108,790
+19,451
| +22% | +$2.08M | 0.04% | 548 |
|
|
2017
Q3 | $9.57M | Buy |
89,339
+9,792
| +12% | +$1.05M | 0.03% | 615 |
|
|
2017
Q2 | $8.49M | Buy |
79,547
+7,574
| +11% | +$810K | 0.03% | 618 |
|
|
2017
Q1 | $7.67M | Buy |
71,973
+11,011
| +18% | +$1.17M | 0.03% | 615 |
|
|
2016
Q4 | $6.48M | Buy |
60,962
+16,151
| +36% | +$1.75M | 0.03% | 652 |
|
|
2016
Q3 | $4.93M | Buy |
44,811
+9,750
| +28% | +$1.07M | 0.03% | 713 |
|
|
2016
Q2 | $3.86M | Buy |
35,061
+5,824
| +20% | +$637K | 0.02% | 728 |
|
|
2016
Q1 | $3.2M | Buy |
29,237
+7,323
| +33% | +$798K | 0.02% | 786 |
|
|
2015
Q4 | $2.36M | Buy |
21,914
+9,275
| +73% | +$1.01M | 0.01% | 940 |
|
|
2015
Q3 | $1.39M | Buy |
12,639
+757
| +6% | +$82.6K | 0.01% | 936 |
|
|
2015
Q2 | $1.29M | Buy |
11,882
+5,814
| +96% | +$637K | 0.01% | 899 |
|
|
2015
Q1 | $670K | Buy |
6,068
+4,678
| +337% | +$514K | 0.01% | 1099 |
|
|
2014
Q4 | $152K | Buy |
+1,390
| New | +$152K | ﹤0.01% | 1484 |
|
Other funds holding MBB
TWIM
TCIIS
SEI Investments's MBB Position: Q2 2026 in Review
SEI Investments increased its iShares MBS ETF (MBB) stake by 8.5% in Q2 2026, buying an estimated $17.5M and bringing the position to 2,380,025 shares worth $225M. The position accounts for 0.2% of the portfolio, ranked #86.
SEI Investments first reported a position in MBB in Q4 2014 and has held it in 47 quarters since. 1,021 funds tracked by Wall St. Rank hold MBB as of Q2 2026.
- SEI Investments held 2,380,025 shares of iShares MBS ETF worth $225M as of Q2 2026.
- SEI Investments bought 185,578 iShares MBS ETF shares in Q2 2026, an estimated $17.5M.
- iShares MBS ETF made up 0.2% of SEI Investments's portfolio in Q2 2026, its #86 holding.
- SEI Investments first reported a position in iShares MBS ETF in Q4 2014 and has held it in 47 quarters since.
- 1,021 funds tracked by Wall St. Rank held iShares MBS ETF as of Q2 2026.
Based on SEI Investments's 13F filing for Q2 2026, filed 14 Aug 2026.