Mariner
IUSB icon

Mariner’s iShares Core Universal USD Bond ETF IUSB Stock Holding History

Mariner’s Portfolio IUSB Stock Details IUSB Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$957M Buy
20,743,278
+1,795,085
+9% +$82.8M 1.01% 17
2026
Q1 		$875M Buy
18,948,193
+2,827,907
+18% +$132M 1.02% 15
2025
Q4 		$750M Buy
16,120,286
+2,115,404
+15% +$98.9M 0.89% 18
2025
Q3 		$654M Buy
14,004,882
+1,449,320
+12% +$67M 0.85% 19
2025
Q2 		$580M Buy
12,555,562
+1,121,415
+10% +$51.2M 0.84% 19
2025
Q1 		$527M Buy
11,434,147
+1,715,827
+18% +$78.2M 0.88% 19
2024
Q4 		$439M Buy
9,718,320
+1,466,593
+18% +$67.3M 0.74% 24
2024
Q3 		$389M Buy
8,251,727
+899,014
+12% +$41.7M 0.69% 24
2024
Q2 		$333M Buy
7,352,713
+857,116
+13% +$38.5M 0.64% 27
2024
Q1 		$296M Buy
6,495,597
+1,864,197
+40% +$84.8M 0.61% 28
2023
Q4 		$213M Buy
4,631,400
+908,249
+24% +$40.1M 0.51% 39
2023
Q3 		$163M Buy
3,723,151
+538,729
+17% +$24.1M 0.44% 49
2023
Q2 		$145M Buy
3,184,422
+777,072
+32% +$35.6M 0.39% 56
2023
Q1 		$111M Buy
2,407,350
+716,636
+42% +$32.8M 0.32% 72
2022
Q4 		$76M Buy
1,690,714
+597,930
+55% +$26.7M 0.24% 95
2022
Q3 		$48.6M Buy
1,092,784
+458,227
+72% +$21.4M 0.19% 123
2022
Q2 		$29.7M Buy
634,557
+450,391
+245% +$21.4M 0.12% 181
2022
Q1 		$9.14M Buy
184,166
+124,045
+206% +$6.32M 0.03% 356
2021
Q4 		$3.18M Buy
60,121
+37,844
+170% +$2.01M 0.01% 528
2021
Q3 		$1.19M Buy
22,277
+3,239
+17% +$174K 0.01% 659
2021
Q2 		$1.02M Buy
+19,038
New +$1.01M 0.01% 660

Other funds holding IUSB

Envestnet Asset Management
Envestnet Asset Management Chicago, Illinois $424B AUM 22.96% 1-Year Est. Return
Jones Financial Companies
Jones Financial Companies Des Peres, Missouri $250B AUM 21.32% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
LPL Financial
LPL Financial San Diego, California $445B AUM 25.58% 1-Year Est. Return
Wells Fargo
Wells Fargo San Francisco, California $617B AUM 30.33% 1-Year Est. Return
Northwestern Mutual Wealth Management
Northwestern Mutual Wealth Management Milwaukee, Wisconsin $187B AUM 21.7% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return
Envestnet Portfolio Solutions
Envestnet Portfolio Solutions Chicago, Illinois $20.9B AUM 19.34% 1-Year Est. Return
Bank of New York Mellon
Bank of New York Mellon New York $609B AUM 40.19% 1-Year Est. Return

Mariner's IUSB Position: Q2 2026 in Review

Mariner increased its iShares Core Universal USD Bond ETF (IUSB) stake by 9.5% in Q2 2026, buying an estimated $82.8M and bringing the position to 20,743,278 shares worth $957M. The position accounts for 1.01% of the portfolio, ranked #17.

Mariner first reported a position in IUSB in Q2 2021 and has held it in 21 quarters since. 856 funds tracked by Wall St. Rank hold IUSB as of Q2 2026.

  • Mariner held 20,743,278 shares of iShares Core Universal USD Bond ETF worth $957M as of Q2 2026.
  • Mariner bought 1,795,085 iShares Core Universal USD Bond ETF shares in Q2 2026, an estimated $82.8M.
  • iShares Core Universal USD Bond ETF made up 1.01% of Mariner's portfolio in Q2 2026, its #17 holding.
  • Mariner first reported a position in iShares Core Universal USD Bond ETF in Q2 2021 and has held it in 21 quarters since.
  • 856 funds tracked by Wall St. Rank held iShares Core Universal USD Bond ETF as of Q2 2026.

Based on Mariner's 13F filing for Q2 2026, filed 13 Aug 2026.