Vanguard Index Funds - Vanguard Mid-Cap ETF
US ˙ ARCA ˙ US9229086296

SecurityVO / Vanguard Index Funds - Vanguard Mid-Cap ETF
InstitutionBokf, Na
Latest Disclosed Ownership100,708 shares
Latest Disclosed Value $ 28,921,323
Bokf, Na reports 14.28% increase in ownership of VO / Vanguard Index Funds - Vanguard Mid-Cap ETF

On May 8, 2026 - Bokf, Na filed a 13F-HR form disclosing ownership of 100,708 shares of Vanguard Index Funds - Vanguard Mid-Cap ETF (US:VO) valued at $28,921,323 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 3, 2026 disclosing 88,127 shares of Vanguard Index Funds - Vanguard Mid-Cap ETF. This represents a change in shares of 14.28% during the quarter. The current value of the position is $8,074,767 USD.

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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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)
2026-05-08 2026-03-31 13F VANGUARD MID-CAP FD ETF common 922908629 100,708 12,581 14.28 28,921 13.08 0.3406
2026-02-03 2025-12-31 13F VANGUARD MID-CAP FD ETF common 922908629 88,127 4,388 5.24 25,576 3.98 0.3914
2025-11-13 2025-09-30 13F VANGUARD MID-CAP FD ETF common 922908629 83,739 3,286 4.08 24,597 9.26 0.3701
2025-08-12 2025-06-30 13F VANGUARD MID-CAP FD ETF common 922908629 80,453 5,787 7.75 22,513 16.59 0.3646
2025-05-13 2025-03-31 13F VANGUARD MID-CAP FD ETF common 922908629 74,666 -4,139 -5.25 19,310 -6.76 0.3414
2025-02-14 2024-12-31 13F VANGUARD MID-CAP FD ETF common 922908629 78,805 10,221 14.90 20,712 15.48 0.3499
2024-11-14 2024-09-30 13F VANGUARD MID-CAP FD ETF common 922908629 68,584 204 0.30 17,935 8.34 0.3182
2024-08-08 2024-06-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 68,380 839 1.24 16,555 -1.26 0.2972
2024-05-15 2024-03-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 67,541 909 1.36 16,766 8.16 0.3053
2024-02-14 2023-12-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 66,632 9,765 17.17 15,501 37.40 0.3035
2023-11-14 2023-09-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 56,867 -715 -1.24 11,283 -11.00 0.2487
2023-08-21 2023-06-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 57,582 -851 -1.46 12,677 2.86 0.2582
2023-05-11 2023-03-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 58,433 -9,815 -14.38 12,325 -11.40 0.2579
2023-02-13 2022-12-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 68,248 2,991 4.58 13,910 13.39 0.2567
2022-11-14 2022-09-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 65,257 -4,626 -6.62 12,267 -10.88 0.2482
2022-08-11 2022-06-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 69,883 637 0.92 13,765 -16.42 0.2639
2022-05-13 2022-03-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 69,246 -7,258 -9.49 16,470 -15.50 0.2714
2022-03-11 2021-12-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 76,504 20,199 35.87 19,491 46.21 0.3016
2021-11-10 2021-09-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 56,305 11,316 25.15 13,331 33.87 0.2292
2021-04-21 2021-03-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 44,989 -249 -0.55 9,958 6.46 0.1811
2021-02-12 2020-12-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 45,238 1,139 2.58 9,354 20.34 0.1785
2020-10-30 2020-09-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 44,099 2,403 5.76 7,773 13.74 0.1708
2020-08-12 2020-06-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 41,696 4,452 11.95 6,834 39.38 0.1607
2020-05-13 2020-03-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 37,244 2,501 7.20 4,903 -20.80 0.1413
2020-02-12 2019-12-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 34,743 -1,821 -4.98 6,191 1.03 0.1399
2019-11-13 2019-09-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 36,564 -2,003 -5.19 6,128 -4.95 0.1476
2019-08-14 2019-06-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 38,567 2,872 8.05 6,447 12.36 0.1549
2019-05-15 2019-03-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 35,695 1,406 4.10 5,738 21.11 0.1374
2019-02-13 2018-12-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 34,289 2,097 6.51 4,738 -10.37 0.1355
2018-11-13 2018-09-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 32,192 2,175 7.25 5,286 11.71 0.1327
2018-08-13 2018-06-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 30,017 2,328 8.41 4,732 10.82 0.1273
2018-05-14 2018-03-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 27,689 -7,528 -21.38 4,270 -21.65 0.1213
2018-02-14 2017-12-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 35,217 1,268 3.74 5,450 9.22 0.1501
2017-11-14 2017-09-30 13F VANGUARD MID-CAP FD ETF 922908629 33,949 -327 -0.95 4,990 2.15 0.1449
2017-08-14 2017-06-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 34,276 618 1.84 4,885 4.22 0.1537
2017-05-15 2017-03-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 33,658 12,319 57.73 4,687 66.86 0.1463
2017-02-14 2016-12-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 21,339 277 1.32 2,809 3.04 0.0924
2016-11-10 2016-09-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 21,062 2,553 13.79 2,726 19.09 0.0902
2016-08-12 2016-06-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 18,509 2,657 16.76 2,289 19.09 0.0807
2016-05-13 2016-03-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 15,852 -881 -5.27 1,922 -4.38 0.0695
2016-02-09 2015-12-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 16,733 -2,545 -13.20 2,010 -10.67 0.0727
2015-11-13 2015-09-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 19,278 -935 -4.63 2,250 -12.66 0.0847
2015-08-13 2015-06-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 20,213 4,788 31.04 2,576 25.84 0.0874
2015-05-14 2015-03-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 15,425 15,425 337.09 2,047 509.23 0.0689
2013-11-12 2013-09-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 0 -3,529 -100.00 0 -100.00
2013-08-14 2013-06-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 3,529 3,529 336 0.0127
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.