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

SecurityVO / Vanguard Index Funds - Vanguard Mid-Cap ETF
InstitutionNatixis Advisors, L.p.
Latest Disclosed Ownership4,033,067 shares
Latest Disclosed Value $ 289,534
Natixis Advisors, L.p. reports 20.00% increase in ownership of VO / Vanguard Index Funds - Vanguard Mid-Cap ETF

On May 13, 2026 - Natixis Advisors, L.p. filed a 13F-HR form disclosing ownership of 4,033,067 shares of Vanguard Index Funds - Vanguard Mid-Cap ETF (US:VO) valued at $1,158,216,181 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 3,360,803 shares of Vanguard Index Funds - Vanguard Mid-Cap ETF. This represents a change in shares of 20.00% during the quarter. The current value of the position is $320,830,480 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)
2026-05-13 2026-03-31 13F VANGUARD BD FD FINANCIALS ETF 922908629 4,033,067 672,264 20.00 290 -70.36 0.4028
2026-02-10 2025-12-31 13F VANGUARD BD FD FINANCIALS ETF 922908629 3,360,803 278,892 9.05 975 7.73 1.3823
2025-11-13 2025-09-30 13F VANGUARD BD INDEX FD FINANCIALS ETF 922908629 3,081,911 320,544 11.61 905 17.23 1.3210
2025-08-13 2025-06-30 13F VANGUARD INDEX FDS MID CAP ETF FD FINANCIALS ETF 922908629 2,761,367 333,426 13.73 773 23.13 1.2259
2025-05-08 2025-03-31 13F VANGUARD BD INDEX INDEX FDS INTERMED TERM 922908629 2,427,941 246,944 11.32 628 8.85 1.1604
2025-02-10 2024-12-31 13F VANGUARD MCAP GR IDXVIP 922908629 2,180,997 236,111 12.14 576 12.28 1.0763
2024-11-06 2024-09-30 13F VANGUARD TOTAL STK MKT 922908629 1,944,886 183,895 10.44 513 20.42 1.0006
2024-08-01 2024-06-30 13F VANGUARD TOTAL STK MKT 922908629 1,760,991 290,003 19.71 426 16.08 0.9270
2024-04-25 2024-03-31 13F VANGUARD INDEX FDS ALLWRLD EX US 922908629 1,470,988 221,222 17.70 368 26.55 0.8450
2024-02-06 2023-12-31 13F VANGUARD INDEX FDS MID CAP ETF INDEX FDS ALLWRLD EX US 922908629 1,249,766 183,940 17.26 291 31.22 0.7653
2023-11-13 2023-09-30 13F VANGUARD BD INDEX FDS ALLWRLD EX US 922908629 1,065,826 -2,061 -0.19 222 -5.96 0.6788
2023-08-15 2023-06-30 13F VANGUARD INDEX FDS ALLWRLD EX US 922908629 1,067,887 85,304 8.68 235 13.53 0.7259
2023-05-11 2023-03-31 13F VANGUARD INDEX FDS MID CAP ETF INDEX FDS ALLWRLD EX US 922908629 982,583 87,403 9.76 207 13.74 0.7132
2023-01-27 2022-12-31 13F VANGUARD MID CAP ETF 922908629 895,180 -172,530 -16.16 182 -99.91 0.6897
2022-11-14 2022-09-30 13F VANGUARD REAL ESTATE ETF 922908629 1,067,710 85,807 8.74 200,708 3.78 0.8490
2022-08-12 2022-06-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 981,903 575,034 141.33 193,405 99.86 0.8505
2022-05-12 2022-03-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 406,869 99,243 32.26 96,770 23.47 0.3690
2022-02-08 2021-12-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 307,626 122,794 66.44 78,374 79.10 0.2993
2021-11-15 2021-09-30 13F VANGUARD COM 922908629 184,832 41,388 28.85 43,761 28.53 0.1800
2021-08-12 2021-06-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 143,444 15,662 12.26 34,046 20.38 0.1589
2021-05-05 2021-03-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 127,782 7,384 6.13 28,283 13.61 0.1476
2021-02-12 2020-12-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 120,398 -44,207 -26.86 24,895 -14.19 0.1434
2020-11-12 2020-09-30 13F VANGUARD BD INTL EQUITY INDEX FDS FTSE EMR MKT ETF 922908629 164,605 9,618 6.21 29,013 14.21 0.1826
2020-08-11 2020-06-30 13F VANGUARD BD INTL EQUITY INDEX FDS FTSE EMR MKT ETF 922908629 154,987 -325,987 -67.78 25,404 -59.88 0.1686
2020-04-27 2020-03-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 480,974 321,630 201.85 63,320 123.02 0.5160
2020-02-10 2019-12-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 159,344 -18,540 -10.42 28,392 -4.77 0.2003
2019-11-12 2019-09-30 13F Vanguard Mid-Cap Growth Index INDEX FD ALLWRLD EX US 922908629 177,884 -7,263 -3.92 29,813 -3.67 0.2366
2019-08-12 2019-06-30 13F VANGUARD INDEX FDS MID CAP ETF MID CAP ETF 922908629 185,147 -17,991 -8.86 30,949 -5.22 0.2528
2019-05-15 2019-03-31 13F/A-1 VANGUARD INDEX FDS MID CAP ETF 922908629 203,138 -637,767 -75.84 32,654 -71.90 0.2859
2019-05-15 2019-03-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 203,138 -637,767 32,654
2019-02-13 2018-12-31 13F/A-1 VANGUARD INDEX FDS MID CAP ETF 922908629 840,905 732,202 673.58 116,196 551.03 1.1473
2019-02-13 2018-12-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 840,905 732,202 116,196
2018-11-13 2018-09-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 108,703 598 0.55 17,848 4.74 0.1571
2018-08-14 2018-06-30 13F/A-1 VANGUARD INDEX FDS MID CAP ETF 922908629 108,105 -17,223 -13.74 17,041 -11.83 0.1628
2018-08-14 2018-06-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 108,105 17,041
2018-05-10 2018-03-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 125,328 -5,585 -4.27 19,327 -4.62 0.1908
2018-02-14 2017-12-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 130,913 13,104 11.12 20,263 17.01 0.2064
2017-11-14 2017-09-30 13F VANGUARD INDEX FDS INDEX FDS MID CAP ETF 922908629 117,809 4,116 3.62 17,318 6.87 0.1829
2017-07-27 2017-06-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 113,693 712 0.63 16,204 3.01 0.1754
2017-05-12 2017-03-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 112,981 63,264 127.25 15,731 140.39 0.1743
2017-02-07 2016-12-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 49,717 8,944 21.94 6,544 23.99 0.0787
2016-11-04 2016-09-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 40,773 2,448 6.39 5,278 11.40 0.0684
2016-08-01 2016-06-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 38,325 23,374 156.34 4,738 161.33 0.0655
2016-05-06 2016-03-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 14,951 1,026 7.37 1,813 8.37 0.0271
2016-02-12 2015-12-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 13,925 13,925 0.00 1,673 0.0274
2015-11-12 2015-09-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 0 0 0 0.0000
2014-11-03 2014-09-30 13F VANGUARD BD INDEX FD SM CP VAL ETF 922908629 0 -6,961 -100.00 0 -100.00
2014-08-13 2014-06-30 13F VANGUARD BD INDEX FD SM CP VAL ETF 922908629 6,961 138 2.02 826 6.58 0.0118
2014-05-13 2014-03-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 6,823 284 4.34 775 7.79 0.0119
2014-02-12 2013-12-31 13F VANGUARD INDEX FDS FDS 922908629 6,539 339 5.47 719 13.23 0.0118
2013-10-30 2013-09-30 13F VANGUARD INDEX FDS SMALL CP ETF 922908629 6,200 221 3.70 635 11.60 0.0117
2013-07-19 2013-06-30 13F VANGUARD INDEX FDS SMALL CP ETF 922908629 5,979 5,979 569 0.0113
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.