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

SecurityVO / Vanguard Index Funds - Vanguard Mid-Cap ETF
InstitutionCitigroup Inc
Latest Disclosed Ownership28,152 shares
Latest Disclosed Value $ 8,084,770
Citigroup Inc reports 97.76% decrease in ownership of VO / Vanguard Index Funds - Vanguard Mid-Cap ETF

On May 11, 2026 - Citigroup Inc filed a 13F-HR form disclosing ownership of 28,152 shares of Vanguard Index Funds - Vanguard Mid-Cap ETF (US:VO) valued at $8,084,691 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 1,255,055 shares of Vanguard Index Funds - Vanguard Mid-Cap ETF. This represents a change in shares of -97.76% during the quarter. The current value of the position is $2,257,227 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)
2026-05-11 2026-03-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 28,152 -1,226,903 -97.76 8,085 -97.78 0.0017
2026-02-13 2025-12-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 1,255,055 1,221,018 3,587.33 364,242 3,543.15 0.1608
2025-11-10 2025-09-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 34,037 2,514 7.98 9,998 13.34 0.0045
2025-08-11 2025-06-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 31,523 -12,596 -28.55 8,821 -22.68 0.0043
2025-05-12 2025-03-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 44,119 -2,771 -5.91 11,410 -7.87 0.0058
2025-02-12 2024-12-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 46,890 14,299 43.87 12,385 44.03 0.0073
2024-11-12 2024-09-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 32,591 13,345 69.34 8,598 84.55 0.0050
2024-08-12 2024-06-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 19,246 -10,290 -34.84 4,659 -36.87 0.0030
2024-05-10 2024-03-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 29,536 9,304 45.99 7,381 56.82 0.0048
2024-02-09 2023-12-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 20,232 5,364 36.08 4,707 52.00 0.0033
2023-12-06 2023-09-30 13F/A-1 VANGUARD INDEX FDS MID CAP ETF 922908629 14,868 -10,857 -42.20 3,096 -45.33 0.0023
2023-11-09 2023-09-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 14,868 -10,857 3,096 0.0009
2023-08-10 2023-06-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 25,725 -1,689 -6.16 5,664 -2.06 0.0037
2023-05-11 2023-03-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 27,414 -11,494 -29.54 5,782 -27.08 0.0041
2023-02-09 2022-12-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 38,908 -10,980 -22.01 7,930 -15.45 0.0063
2022-11-10 2022-09-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 49,888 2,921 6.22 9,378 1.37 0.0067
2022-08-10 2022-06-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 46,967 1,061 2.31 9,251 -15.27 0.0069
2022-05-12 2022-03-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 45,906 3,004 7.00 10,918 -0.11 0.0066
2022-02-10 2021-12-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 42,902 -14,067 -24.69 10,930 -18.97 0.0059
2021-11-10 2021-09-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 56,969 -26,932 -32.10 13,488 -32.27 0.0080
2021-08-10 2021-06-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 83,901 -17,164 -16.98 19,914 -10.98 0.0120
2021-05-13 2021-03-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 101,065 28,839 39.93 22,370 49.79 0.0145
2021-02-11 2020-12-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 72,226 -5,147 -6.65 14,934 9.50 0.0088
2020-11-12 2020-09-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 77,373 -13,192 -14.57 13,638 -8.12 0.0089
2020-08-12 2020-06-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 90,565 -3,140 -3.35 14,844 20.33 0.0116
2020-05-12 2020-03-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 93,705 -28,385 -23.25 12,336 -43.29 0.0112
2020-02-12 2019-12-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 122,090 8,323 7.32 21,754 14.09 0.0157
2019-11-08 2019-09-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 113,767 -1,561 -1.35 19,068 -1.09 0.0151
2019-08-12 2019-06-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 115,328 -2,688 -2.28 19,278 1.62 0.0156
2019-05-13 2019-03-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 118,016 21,868 22.74 18,971 42.79 0.0183
2019-02-12 2018-12-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 96,148 -15,727 -14.06 13,286 -27.67 0.0135
2018-11-13 2018-09-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 111,875 -10,307 -8.44 18,369 -4.63 0.0164
2018-08-10 2018-06-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 122,182 -7,821 -6.02 19,261 -3.90 0.0177
2018-05-11 2018-03-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 130,003 35,813 38.02 20,042 37.47 0.0165
2018-02-12 2017-12-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 94,190 34,931 58.95 14,579 67.36 0.0117
2017-11-13 2017-09-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 59,259 4,455 8.13 8,711 11.54 0.0071
2017-08-11 2017-06-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 54,804 1,602 3.01 7,810 5.43 0.0070
2017-05-12 2017-03-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 53,202 7,208 15.67 7,408 22.35 0.0066
2017-02-10 2016-12-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 45,994 5,691 14.12 6,055 16.06 0.0055
2016-11-10 2016-09-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 40,303 -7,323 -15.38 5,217 -11.41 0.0049
2016-08-12 2016-06-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 47,626 -10,914 -18.64 5,889 -17.01 0.0060
2016-05-13 2016-03-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 58,540 -9,993 -14.58 7,096 -13.79 0.0080
2016-02-12 2015-12-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 68,533 -33,297 -32.70 8,231 -30.72 0.0082
2015-11-13 2015-09-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 101,830 9,882 10.75 11,881 1.41 0.0111
2015-08-13 2015-06-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 91,948 -19,541 -17.53 11,716 -20.81 0.0104
2015-05-14 2015-03-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 111,489 -3,306 -2.88 14,795 4.31 0.0143
2015-02-17 2014-12-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 114,795 3,053 2.73 14,184 8.21 0.0127
2014-11-14 2014-09-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 111,742 8,744 8.49 13,108 7.24 0.0115
2014-08-14 2014-06-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 102,998 -12,037 -10.46 12,223 -6.44 0.0117
2014-05-15 2014-03-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 115,035 4,886 4.44 13,065 7.81 0.0134
2014-02-14 2013-12-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 110,149 14,424 15.07 12,118 23.65 0.0110
2013-11-14 2013-09-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 95,725 3,908 4.26 9,800 12.19 0.0092
2013-08-14 2013-06-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 91,817 91,817 8,735 0.0086
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.