Vanguard Bond Index Funds - Vanguard Intermediate-Term Bond ETF
US ˙ ARCA ˙ US9219378190

SecurityBIV / Vanguard Bond Index Funds - Vanguard Intermediate-Term Bond ETF
InstitutionCitadel Advisors Llc
ManagerKen Griffin
Latest Disclosed Ownership106,326 shares
Latest Disclosed Value $ 8,206,241
Citadel Advisors Llc ownership in BIV / Vanguard Bond Index Funds - Vanguard Intermediate-Term Bond ETF

On May 15, 2026 - Citadel Advisors Llc filed a 13F-HR form disclosing ownership of 106,326 shares of Vanguard Bond Index Funds - Vanguard Intermediate-Term Bond ETF (US:BIV) valued at $8,206,241 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 0 shares of Vanguard Bond Index Funds - Vanguard Intermediate-Term Bond ETF. The current value of the position is $8,086,092 USD.

Citadel Advisors Llc has a history of taking positions in derivatives of the underlying security (BIV) in the form of stock options. The firm currently holds call options representing 4,000 of underlying shares valued at $308,720 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.

BIV / Vanguard Bond Index Funds - Vanguard Intermediate-Term 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)
2026-05-15 2026-03-31 13F VANGUARD BD INDEX FDS INTERMED TERM 921937819 106,326 106,326 8,206 0.0013
2026-02-17 2025-12-31 13F VANGUARD BD INDEX FDS INTERMED TERM 921937819 0 -146,882 -100.00 0 -100.00
2025-11-14 2025-09-30 13F VANGUARD BD INDEX FDS INTERMED TERM 921937819 146,882 146,882 11,470 0.0017
2025-05-15 2025-03-31 13F VANGUARD BD INDEX FDS INTERMED TERM 921937819 0 -218,734 -100.00 0 -100.00
2025-02-14 2024-12-31 13F VANGUARD BD INDEX FDS INTERMED TERM 921937819 218,734 215,215 6,115.80 16,346 5,843.64 0.0028
2024-11-14 2024-09-30 13F VANGUARD BD INDEX FDS INTERMED TERM 921937819 3,519 3,519 276 0.0001
2024-08-14 2024-06-30 13F VANGUARD BD INDEX FDS INTERMED TERM 921937819 0 -93,163 -100.00 0 -100.00
2024-05-15 2024-03-31 13F VANGUARD BD INDEX FDS INTERMED TERM 921937819 93,163 93,163 7,024 0.0014
2024-02-14 2023-12-31 13F VANGUARD BD INDEX FDS INTERMED TERM 921937819 0 -237,411 -100.00 0 -100.00
2023-11-14 2023-09-30 13F VANGUARD BD INDEX FDS INTERMED TERM 921937819 237,411 237,411 17,167 0.0037
2023-02-14 2022-12-31 13F VANGUARD BD INDEX FDS INTERMED TERM 921937819 0 -394,836 -100.00 0 -100.00
2022-11-14 2022-09-30 13F VANGUARD BD INDEX FDS INTERMED TERM 921937819 394,836 394,836 29,013 0.0066
2022-08-15 2022-06-30 13F VANGUARD BD INDEX FDS INTERMED TERM 921937819 0 -402,533 -100.00 0 -100.00
2022-05-16 2022-03-31 13F VANGUARD BD INDEX FDS INTERMED TERM 921937819 402,533 159,224 65.44 32,967 54.64 0.0068
2022-02-14 2021-12-31 13F VANGUARD BD INDEX FDS INTERMED TERM 921937819 243,309 54,744 29.03 21,319 26.41 0.0044
2021-11-15 2021-09-30 13F VANGUARD BD INDEX FDS Cmn 921937819 188,565 -237,870 -55.78 16,865 -56.04 0.0035
2021-08-16 2021-06-30 13F VANGUARD BD INDEX FDS INTERMED TERM 921937819 426,435 -1,468,019 -77.49 38,362 -77.18 0.0086
2021-05-21 2021-03-31 13F/A-1 VANGUARD BD INDEX FDS INTERMED TERM 921937819 1,894,454 642,310 51.30 168,095 44.58 0.0412
2021-05-17 2021-03-31 13F VANGUARD BD INDEX FDS INTERMED TERM 921937819 1,894,454 642,310 168,095 0.0412
2021-02-16 2020-12-31 13F VANGUARD BD INDEX FDS INTERMED TERM 921937819 1,252,144 809,351 182.78 116,262 180.88 0.0302
2020-11-16 2020-09-30 13F VANGUARD BD INDEX FDS INTERMED TERM 921937819 442,793 442,793 41,392 0.0117
2020-08-14 2020-06-30 13F VANGUARD BD INDEX FDS Cmn 921937819 0 -2,699,966 -100.00 0 -100.00
2020-05-15 2020-03-31 13F VANGUARD BD INDEX FDS Cmn 921937819 2,699,966 2,619,004 3,234.86 241,188 3,315.29 0.1084
2020-02-14 2019-12-31 13F VANGUARD BD INDEX FD Cmn 921937819 80,962 80,962 7,062 0.0031
2019-05-15 2019-03-31 13F VANGUARD BD INDEX FD Cmn 921937819 0 -124,353 -100.00 0 -100.00
2019-02-14 2018-12-31 13F VANGUARD BD INDEX FD Cmn 921937819 124,353 86,596 229.35 10,109 232.64 0.0055
2018-11-13 2018-09-30 13F VANGUARD BD INDEX FD Cmn 921937819 37,757 37,757 3,039 0.0014
2018-08-14 2018-06-30 13F/A-1 VANGUARD BD INDEX FD Cmn 921937819 0 -41,860 -100.00 0 -100.00
2018-05-14 2018-03-31 13F/A-1 VANGUARD BD INDEX FD Cmn 921937819 41,860 2,890 7.42 3,423 4.78 0.0019
2018-05-11 2018-03-31 13F VANGUARD BD INDEX FD Cmn 921937819 41,860 2,890 3,423
2018-02-09 2017-12-31 13F VANGUARD BD INDEX FD Cmn 921937819 38,970 27,779 248.23 3,267 249.04 0.0020
2017-05-12 2017-03-31 13F VANGUARD BD INDEX FD Cmn 921937819 11,191 11,191 936 0.0009
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
(%)
2026-05-15 2026-03-31 13F VANGUARD BD INDEX FDS INTERMED TERM Call 4,000 42.86 309 41.28 n/a n/a n/a
2026-02-17 2025-12-31 13F VANGUARD BD INDEX FDS INTERMED TERM Call 2,800 -46.15 218 -46.31 n/a n/a n/a
2025-11-14 2025-09-30 13F VANGUARD BD INDEX FDS INTERMED TERM Call 5,200 406 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.