Cornerstone Management’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
$12.3M Sell
129,845
-9,087
-7% -$859K 1.77% 12
2026
Q1
$13.2M Buy
138,932
+9,537
+7% +$911K 2.1% 11
2025
Q4
$12.3M Buy
129,395
+3,254
+3% +$310K 2.01% 10
2025
Q3
$12M Buy
126,141
+13,520
+12% +$1.27M 1.98% 10
2025
Q2
$10.6M Sell
112,621
-831
-0.7% -$77K 1.84% 10
2025
Q1
$10.6M Buy
113,452
+1,568
+1% +$145K 1.99% 10
2024
Q4
$10.3M Buy
111,884
+8,682
+8% +$808K 1.99% 10
2024
Q3
$9.89M Sell
103,202
-223
-0.2% -$21.1K 2.06% 9
2024
Q2
$9.5M Buy
103,425
+17,183
+20% +$1.57M 2.09% 9
2024
Q1
$7.97M Buy
86,242
+8,059
+10% +$745K 1.77% 9
2023
Q4
$7.36M Sell
78,183
-1,201
-2% -$108K 1.88% 10
2023
Q3
$7.05M Buy
79,384
+2,810
+4% +$257K 1.88% 9
2023
Q2
$7.14M Buy
76,574
+1,549
+2% +$146K 1.82% 9
2023
Q1
$7.11M Buy
75,025
+14,262
+23% +$1.35M 1.85% 9
2022
Q4
$5.64M Buy
60,763
+2,905
+5% +$268K 1.59% 14
2022
Q3
$5.3M Sell
57,858
-147
-0.3% -$14.3K 1.44% 15
2022
Q2
$5.65M Buy
58,005
+3,727
+7% +$366K 1.47% 14
2022
Q1
$5.53M Buy
54,278
+6,480
+14% +$676K 1.36% 15
2021
Q4
$5.13M Sell
47,798
-4,673
-9% -$503K 1.42% 15
2021
Q3
$5.67M Buy
52,471
+1,099
+2% +$119K 1.49% 16
2021
Q2
$5.56M Buy
51,372
+284
+0.6% +$30.8K 1.49% 16
2021
Q1
$5.54M Buy
+51,088
New +$5.6M 1.58% 15

Other funds holding MBB

Cornerstone Management's MBB Position: Q2 2026 in Review

Cornerstone Management reduced its iShares MBS ETF (MBB) stake by 6.5% in Q2 2026, selling an estimated $859K and leaving 129,845 shares worth $12.3M. The position accounts for 1.77% of the portfolio, ranked #12.

Cornerstone Management first reported a position in MBB in Q1 2021 and has held it in 22 quarters since. The position peaked at $13.2M in Q1 2026. 1,021 funds tracked by Wall St. Rank hold MBB as of Q2 2026.

  • Cornerstone Management held 129,845 shares of iShares MBS ETF worth $12.3M as of Q2 2026.
  • Cornerstone Management sold 9,087 iShares MBS ETF shares in Q2 2026, an estimated $859K.
  • iShares MBS ETF made up 1.77% of Cornerstone Management's portfolio in Q2 2026, its #12 holding.
  • Cornerstone Management first reported a position in iShares MBS ETF in Q1 2021 and has held it in 22 quarters since.
  • Cornerstone Management's iShares MBS ETF position peaked at $13.2M in Q1 2026.
  • 1,021 funds tracked by Wall St. Rank held iShares MBS ETF as of Q2 2026.

Based on Cornerstone Management's 13F filing for Q2 2026, filed 16 Jul 2026.