Citadel Advisors’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 | $265K | Sell |
2,800
-1,700
| -38% | -$161K | ﹤0.01% | 11403 |
|
|
2026
Q1 | $427K | Sell |
4,500
-15,700
| -78% | -$1.5M | ﹤0.01% | 9678 |
|
|
2025
Q4 | $1.92M | Buy |
20,200
+10,200
| +102% | +$973K | ﹤0.01% | 5994 |
|
|
2025
Q3 | $952K | Buy |
10,000
+4,000
| +67% | +$376K | ﹤0.01% | 7640 |
|
|
2025
Q2 | $563K | Buy |
6,000
+200
| +3% | +$18.5K | ﹤0.01% | 8357 |
|
|
2025
Q1 | $544K | Sell |
5,800
-15,100
| -72% | -$1.4M | ﹤0.01% | 8292 |
|
|
2024
Q4 | $1.92M | Sell |
20,900
-7,300
| -26% | -$680K | ﹤0.01% | 5726 |
|
|
2024
Q3 | $2.7M | Sell |
28,200
-17,500
| -38% | -$1.65M | ﹤0.01% | 4975 |
|
|
2024
Q2 | $4.2M | Sell |
45,700
-6,200
| -12% | -$565K | ﹤0.01% | 4022 |
|
|
2024
Q1 | $4.8M | Sell |
51,900
-124,300
| -71% | -$11.5M | ﹤0.01% | 4015 |
|
|
2023
Q4 | $16.6M | Sell |
176,200
-22,900
| -12% | -$2.05M | ﹤0.01% | 2219 |
|
|
2023
Q3 | $17.7M | Buy |
199,100
+2,000
| +1% | +$183K | ﹤0.01% | 1994 |
|
|
2023
Q2 | $18.4M | Buy |
197,100
+149,600
| +315% | +$14.1M | ﹤0.01% | 1975 |
|
|
2023
Q1 | $4.5M | Sell |
47,500
-58,800
| -55% | -$5.55M | ﹤0.01% | 3986 |
|
|
2022
Q4 | $9.86M | Buy |
106,300
+52,100
| +96% | +$4.81M | ﹤0.01% | 2865 |
|
|
2022
Q3 | $4.96M | Buy |
54,200
+4,700
| +9% | +$456K | ﹤0.01% | 3886 |
|
|
2022
Q2 | $4.83M | Buy |
49,500
+3,700
| +8% | +$363K | ﹤0.01% | 3859 |
|
|
2022
Q1 | $4.67M | Buy |
45,800
+39,000
| +574% | +$4.07M | ﹤0.01% | 4307 |
|
|
2021
Q4 | $731K | Buy |
6,800
+4,800
| +240% | +$517K | ﹤0.01% | 8730 |
|
|
2021
Q3 | $216K | Sell |
2,000
-95,400
| -98% | -$10.3M | ﹤0.01% | 11827 |
|
|
2021
Q2 | $10.5M | Buy |
97,400
+57,600
| +145% | +$6.24M | ﹤0.01% | 2988 |
|
|
2021
Q1 | $4.32M | Buy |
39,800
+9,200
| +30% | +$1.01M | ﹤0.01% | 4595 |
|
|
2020
Q4 | $3.37M | Sell |
30,600
-78,200
| -72% | -$8.61M | ﹤0.01% | 4378 |
|
|
2020
Q3 | $12M | Buy |
108,800
+40,300
| +59% | +$4.46M | ﹤0.01% | 2080 |
|
|
2020
Q2 | $7.58M | Buy |
68,500
+61,200
| +838% | +$6.78M | ﹤0.01% | 2553 |
|
|
2020
Q1 | $806K | Hold |
7,300
| – | – | ﹤0.01% | 5695 |
|
|
2019
Q4 | $789K | Sell |
7,300
-2,900
| -28% | -$313K | ﹤0.01% | 6024 |
|
|
2019
Q3 | $1.1M | Buy |
10,200
+3,100
| +44% | +$335K | ﹤0.01% | 5429 |
|
|
2019
Q2 | $764K | Buy |
+7,100
| New | +$755K | ﹤0.01% | 6138 |
|
|
2019
Q1 | – | Sell |
-4,000
| Closed | -$419K | – | 9631 |
|
|
2018
Q4 | $419K | Buy |
+4,000
| New | +$411K | ﹤0.01% | 6684 |
|
Other funds holding MBB
TWIM
TCIIS
Citadel Advisors's MBB Position: Q2 2026 in Review
Citadel Advisors sold out of iShares MBS ETF (MBB) in Q2 2026, closing a stake of 127,545 shares — an estimated $12.1M sold.
Citadel Advisors first reported a position in MBB in Q1 2014 and held it in 23 quarters. The position peaked at $557M in Q1 2021. 1,026 funds tracked by Wall St. Rank hold MBB as of Q2 2026.
- Citadel Advisors reported no remaining iShares MBS ETF position as of Q2 2026 after selling out during the quarter.
- Citadel Advisors sold 127,545 iShares MBS ETF shares in Q2 2026, an estimated $12.1M.
- Citadel Advisors first reported a position in iShares MBS ETF in Q1 2014 and held it in 23 quarters.
- Citadel Advisors's iShares MBS ETF position peaked at $557M in Q1 2021.
- 1,026 funds tracked by Wall St. Rank held iShares MBS ETF as of Q2 2026.
Based on Citadel Advisors's 13F filing for Q2 2026, filed 14 Aug 2026.