iShares Trust - iShares Core 1-5 Year USD Bond ETF
US ˙ NasdaqGM ˙ US46432F8591

SecurityISTB / iShares Trust - iShares Core 1-5 Year USD Bond ETF
InstitutionParallel Advisors, LLC
Latest Disclosed Ownership2,658 shares
Latest Disclosed Value $ 129,592
Parallel Advisors, LLC ownership in ISTB / iShares Trust - iShares Core 1-5 Year USD Bond ETF

On February 11, 2026 - Parallel Advisors, LLC filed a 13F-HR form disclosing ownership of 2,658 shares of iShares Trust - iShares Core 1-5 Year USD Bond ETF (US:ISTB) valued at $129,578 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 2,657 shares of iShares Trust - iShares Core 1-5 Year USD Bond ETF. This represents a change in shares of 0.04% during the quarter. The current value of the position is $127,930 USD.

Parallel Advisors, LLC has a history of taking positions in derivatives of the underlying security (ISTB) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

ISTB / iShares Trust - iShares Core 1-5 Year USD Bond ETF Historical Put/Call Ratio
Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-02-11 2025-12-31 13F ISHARES CORE 1-5 YEAR USD BOND ETF ETF 46432F859 2,658 1 0.04 130 0.00 0.0024
2025-11-13 2025-09-30 13F ISHARES CORE 1-5 YEAR USD BOND ETF ETF 46432F859 2,657 1 0.04 130 0.00 0.0024
2025-07-08 2025-06-30 13F ISHARES CORE 1-5 YEAR USD BOND ETF ETF 46432F859 2,656 2,571 3,024.71 129 3,125.00 0.0026
2025-04-08 2025-03-31 13F ISHARES CORE 1-5 YEAR USD BOND ETF ETF 46432F859 85 -20 -19.05 4 -20.00 0.0001
2025-02-10 2024-12-31 13F ISHARES CORE 1-5 YEAR USD BOND ETF ETF 46432F859 105 2 1.94 5 0.00 0.0001
2024-11-13 2024-09-30 13F ISHARES CORE 1-5 YEAR USD BOND ETF ETF 46432F859 103 -146 -58.63 5 -54.55 0.0001
2024-08-08 2024-06-30 13F ISHARES CORE 1-5 YEAR USD BOND ETF ETF 46432F859 249 105 72.92 12 83.33 0.0003
2024-05-06 2024-03-31 13F ISHARES CORE 1-5 YEAR USD BOND ETF ETF 46432F859 144 43 42.57 7 50.00 0.0002
2024-02-12 2023-12-31 13F ISHARES CORE 1-5 YEAR USD BOND ETF ETF 46432F859 101 1 1.00 5 0.00 0.0001
2024-05-20 2023-09-30 13F/A-1 ISHARES CORE 1-5 YEAR USD BOND ETF ETF 46432F859 100 100 5 0.0002
2023-11-14 2023-09-30 13F ISHARES CORE 1-5 YEAR USD BOND ETF ETF 46432F859 100 100 5 0.0002
2023-02-03 2022-12-31 13F ISHARES CORE 1-5 YEAR USD BOND ETF ETF 46432F859 0 -84 -100.00 0 -100.00
2022-11-10 2022-09-30 13F ISHARES CORE 1-5 YEAR USD BOND ETF ETF 46432F859 84 0 0.00 4 0.00 0.0002
2022-08-01 2022-06-30 13F ISHARES CORE 1-5 YEAR USD BOND ETF ETF 46432F859 84 0 0.00 4 0.00 0.0002
2022-04-28 2022-03-31 13F ISHARES CORE 1-5 YEAR USD BOND ETF ETF 46432F859 84 -774 -90.21 4 -90.70 0.0002
2022-01-20 2021-12-31 13F ISHARES CORE 1-5 YEAR USD BOND ETF ETF 46432F859 858 767 842.86 43 760.00 0.0016
2021-11-02 2021-09-30 13F/A-1 ISHARES CORE 1-5 YEAR USD BOND ETF ETF 46432F859 91 0 0.00 5 0.00 0.0002
2021-08-06 2021-06-30 13F ISHARES CORE 1-5 YEAR USD BOND ETF ETF 46432F859 91 -2,507 -96.50 5 -96.24 0.0002
2021-04-23 2021-03-31 13F ISHARES CORE 1-5 YEAR USD BOND ETF ETF 46432F859 2,598 582 28.87 133 27.88 0.0063
2021-02-02 2020-12-31 13F ISHARES CORE 1-5 YEAR USD BOND ETF ETF 46432F859 2,016 2 0.10 104 0.00 0.0056
2020-10-27 2020-09-30 13F ISHARES CORE 1-5 YEAR USD BOND ETF ETF 46432F859 2,014 -108 -5.09 104 -4.59 0.0064
2020-07-16 2020-06-30 13F ISHARES CORE 1-5 YEAR USD BOND ETF ETF 46432F859 2,122 -525 -19.83 109 -18.05 0.0071
2020-04-27 2020-03-31 13F ISHARES CORE 1-5 YEAR USD BOND ETF ETF 46432F859 2,647 2 0.08 133 0.00 0.0108
2020-01-30 2019-12-31 13F ISHARES CORE 1-5 YEAR USD BOND ETF ETF 46432F859 2,645 3 0.11 133 0.00 0.0100
2019-11-01 2019-09-30 13F ISHARES CORE 1-5 YEAR USD BOND ETF ETF 46432F859 2,642 946 55.78 133 54.65 0.0114
2019-08-05 2019-06-30 13F ISHARES CORE 1-5 YEAR USD BOND ETF ETF 46432F859 1,696 1,077 173.99 86 177.42 0.0084
2019-05-01 2019-03-31 13F ISHARES CORE 1-5 YEAR USD BOND ETF ETF 46432F859 619 0 0.00 31 3.33 0.0035
2019-02-05 2018-12-31 13F ISHARES CORE 1-5 YEAR USD BOND ETF ETF 46432F859 619 84 15.70 30 15.38 0.0042
2018-11-01 2018-09-30 13F ISHARES CORE 1-5 YEAR USD BOND ETF ETF 46432F859 535 151 39.32 26 44.44 0.0032
2018-07-30 2018-06-30 13F ISHARES CORE 1-5 YEAR USD BOND ETF ETF 46432F859 384 15 4.07 18 0.00 0.0026
2018-05-08 2018-03-31 13F ISHARES CORE 1-5 YEAR USD BOND ETF ETF 46432F859 369 59 19.03 18 20.00 0.0028
2018-02-13 2017-12-31 13F ISHARES CORE 1-5 YEAR USD BOND ETF ETF 46432F859 310 0 0.00 15 0.00 0.0025
2017-11-15 2017-09-30 13F/A-1 ISHARES CORE 1-5 YEAR USD BOND ETF ETF 46432F859 310 0 0.00 15 -6.25 0.0026
2017-08-07 2017-06-30 13F ISHARES CORE 1-5 YEAR USD BOND ETF ETF 46432F859 310 0 0.00 16 0.00 0.0030
2017-05-12 2017-03-31 13F/A-1 ISHARES CORE 1-5 YEAR USD BOND ETF ETF 46432F859 310 0 0.00 16 0.00 0.0032
2017-05-12 2017-03-31 13F ISHARES CORE 1-5 YEAR USD BOND ETF ETF 46432F859 310 16
2017-02-14 2016-12-31 13F ISHARES CORE 1-5 YEAR USD BOND ETF ETF 46432F859 310 310 16 0.0038
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2022-01-19 2021-12-31 13F ISHARES CORE 1-5 YEAR USD BOND ETF ETF Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-10-22 2021-09-30 13F ISHARES CORE 1-5 YEAR USD BOND ETF ETF Call 91 5 n/a n/a n/a
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.