Mariner
ISTB icon

Mariner’s iShares Core 1-5 Year USD Bond ETF ISTB Stock Holding History

Mariner’s Portfolio ISTB Stock Details ISTB Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$64M Buy
1,320,761
+36,275
+3% +$1.77M 0.07% 217
2025
Q4 		$62.6M Buy
1,284,486
+36,456
+3% +$1.78M 0.07% 216
2025
Q3 		$61M Buy
1,248,030
+91,459
+8% +$4.45M 0.08% 209
2025
Q2 		$56.3M Buy
1,156,571
+22,637
+2% +$1.09M 0.08% 217
2025
Q1 		$54.8M Buy
1,133,934
+1,423
+0.1% +$68.3K 0.09% 199
2024
Q4 		$54.1M Buy
1,132,511
+59,977
+6% +$2.88M 0.09% 197
2024
Q3 		$52.2M Buy
1,072,534
+13,354
+1% +$643K 0.09% 201
2024
Q2 		$50.2M Buy
1,059,180
+17,052
+2% +$804K 0.1% 191
2024
Q1 		$49.4M Buy
1,042,128
+30,787
+3% +$1.46M 0.1% 190
2023
Q4 		$48.1M Buy
1,011,341
+26,518
+3% +$1.24M 0.11% 176
2023
Q3 		$45.7M Sell
984,823
-57,086
-5% -$2.66M 0.12% 163
2023
Q2 		$48.6M Sell
1,041,909
-7,058
-0.7% -$332K 0.13% 154
2023
Q1 		$49.5M Sell
1,048,967
-554,985
-35% -$26M 0.14% 149
2022
Q4 		$74.5M Sell
1,603,952
-121,617
-7% -$5.63M 0.24% 97
2022
Q3 		$79.5M Sell
1,725,569
-406,205
-19% -$19.2M 0.32% 78
2022
Q2 		$101M Buy
2,131,774
+431,233
+25% +$20.6M 0.41% 63
2022
Q1 		$82.4M Buy
1,700,541
+32,490
+2% +$1.6M 0.31% 77
2021
Q4 		$84.1M Buy
1,668,051
+57,367
+4% +$2.91M 0.36% 72
2021
Q3 		$82.3M Buy
1,610,684
+92,515
+6% +$4.74M 0.43% 52
2021
Q2 		$77.9M Buy
1,518,169
+120,792
+9% +$6.2M 0.48% 46
2021
Q1 		$71.7M Buy
1,397,377
+522,130
+60% +$26.9M 0.5% 47
2020
Q4 		$45.2M Buy
875,247
+110,700
+14% +$5.7M 0.35% 83
2020
Q3 		$39.4M Buy
764,547
+51,057
+7% +$2.63M 0.37% 73
2020
Q2 		$36.7M Buy
713,490
+62,950
+10% +$3.22M 0.37% 76
2020
Q1 		$32.9M Buy
650,540
+77,154
+13% +$3.89M 0.41% 66
2019
Q4 		$28.9M Buy
573,386
+112,208
+24% +$5.65M 0.3% 96
2019
Q3 		$23.3M Buy
461,178
+56,905
+14% +$2.87M 0.28% 100
2019
Q2 		$20.4M Buy
404,273
+62,978
+18% +$3.14M 0.24% 114
2019
Q1 		$17M Buy
341,295
+96,618
+39% +$4.78M 0.24% 116
2018
Q4 		$12M Buy
244,677
+26,234
+12% +$1.28M 0.21% 128
2018
Q3 		$10.7M Buy
218,443
+23,522
+12% +$1.15M 0.28% 88
2018
Q2 		$9.57M Buy
194,921
+21,035
+12% +$1.03M 0.27% 89
2018
Q1 		$8.58M Buy
173,886
+32,204
+23% +$1.59M 0.31% 78
2017
Q4 		$7.06M Buy
141,682
+17,284
+14% +$864K 0.27% 75
2017
Q3 		$6.25M Buy
124,398
+9,146
+8% +$460K 0.28% 68
2017
Q2 		$5.79M Buy
115,252
+12,205
+12% +$613K 0.27% 72
2017
Q1 		$5.16M Buy
103,047
+654
+0.6% +$32.7K 0.22% 85
2016
Q4 		$5.12M Buy
102,393
+38,065
+59% +$1.91M 0.24% 80
2016
Q3 		$3.26M Buy
64,328
+8,292
+15% +$420K 0.16% 118
2016
Q2 		$2.85M Buy
56,036
+19,250
+52% +$970K 0.15% 137
2016
Q1 		$1.85M Buy
36,786
+12,490
+51% +$623K 0.11% 174
2015
Q4 		$1.21M Buy
24,296
+3,342
+16% +$167K 0.08% 195
2015
Q3 		$1.05M Sell
20,954
-744
-3% -$37.3K 0.05% 241
2015
Q2 		$1.09M Buy
21,698
+9,520
+78% +$479K 0.05% 235
2015
Q1 		$614K Buy
12,178
+6,710
+123% +$337K 0.05% 225
2014
Q4 		$274K Buy
+5,468
New +$274K 0.02% 304

Other funds holding ISTB

AA
Acorns Advisers Irvine, California $13.5B AUM 15.15% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
State of Wisconsin Investment Board
State of Wisconsin Investment Board Madison, Wisconsin $43.7B AUM 27.76% 1-Year Est. Return
Charles Schwab
Charles Schwab San Francisco, California $654B AUM 26.35% 1-Year Est. Return
Raymond James Financial
Raymond James Financial St Petersburg, Florida $324B AUM 22.36% 1-Year Est. Return
Jones Financial Companies
Jones Financial Companies Des Peres, Missouri $208B AUM 16.12% 1-Year Est. Return
ST
Spinnaker Trust Portland, Maine $1.81B AUM 17.83% 1-Year Est. Return
SSWG
Seven Springs Wealth Group Brentwood, Tennessee $432M AUM 23% 1-Year Est. Return
TA
Townsend & Associates Westminster, Colorado $1.16B AUM 19.22% 1-Year Est. Return
FSAG
Financial Solutions Advisory Group Chicago, Illinois $791M AUM

Mariner's ISTB Position: Q1 2026 in Review

Mariner increased its iShares Core 1-5 Year USD Bond ETF (ISTB) stake by 2.8% in Q1 2026, buying an estimated $1.77M and bringing the position to 1,320,761 shares worth $64M. The position accounts for 0.07% of the portfolio, ranked #217.

Mariner first reported a position in ISTB in Q4 2014 and has held it in 46 quarters since. The position peaked at $101M in Q2 2022. 393 funds tracked by Wall St. Rank hold ISTB as of Q1 2026.

  • Mariner held 1,320,761 shares of iShares Core 1-5 Year USD Bond ETF worth $64M as of Q1 2026.
  • Mariner bought 36,275 iShares Core 1-5 Year USD Bond ETF shares in Q1 2026, an estimated $1.77M.
  • iShares Core 1-5 Year USD Bond ETF made up 0.07% of Mariner's portfolio in Q1 2026, its #217 holding.
  • Mariner first reported a position in iShares Core 1-5 Year USD Bond ETF in Q4 2014 and has held it in 46 quarters since.
  • Mariner's iShares Core 1-5 Year USD Bond ETF position peaked at $101M in Q2 2022.
  • 393 funds tracked by Wall St. Rank held iShares Core 1-5 Year USD Bond ETF as of Q1 2026.

Based on Mariner's 13F filing for Q1 2026, filed 13 May 2026.