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

SecurityVO / Vanguard Index Funds - Vanguard Mid-Cap ETF
InstitutionCAPROCK Group, Inc.
Latest Disclosed Ownership59,508 shares
Latest Disclosed Value $ 17,089,599
CAPROCK Group, Inc. reports 2.34% increase in ownership of VO / Vanguard Index Funds - Vanguard Mid-Cap ETF

On May 11, 2026 - CAPROCK Group, Inc. filed a 13F-HR form disclosing ownership of 59,508 shares of Vanguard Index Funds - Vanguard Mid-Cap ETF (US:VO) valued at $17,089,507 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 28, 2026 disclosing 58,150 shares of Vanguard Index Funds - Vanguard Mid-Cap ETF. This represents a change in shares of 2.34% during the quarter. The current value of the position is $4,733,861 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 59,508 1,358 2.34 17,090 1.26 0.4148
2026-01-28 2025-12-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 58,150 1,051 1.84 16,876 1.95 0.3565
2025-11-06 2025-09-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 57,099 -285 -0.50 16,555 11.55 0.4078
2025-05-15 2025-03-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 57,384 9,880 20.80 14,841 18.28 0.4526
2025-01-23 2024-12-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 47,504 876 1.88 12,547 1.99 0.4101
2024-11-07 2024-09-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 46,628 542 1.18 12,302 9.84 0.4476
2024-08-06 2024-06-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 46,086 -1,490 -3.13 11,200 -5.78 0.4554
2024-04-29 2024-03-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 47,576 4,865 11.39 11,888 19.64 0.6814
2024-01-18 2023-12-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 42,711 803 1.92 9,936 13.87 0.6349
2023-10-18 2023-09-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 41,908 525 1.27 8,727 -4.23 0.6603
2023-08-10 2023-06-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 41,383 -760 -1.80 9,111 2.51 0.6690
2023-04-26 2023-03-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 42,143 -1,227 -2.83 8,889 0.55 0.6888
2023-01-23 2022-12-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 43,370 2,233 5.43 8,839 14.30 0.8229
2022-11-07 2022-09-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 41,137 1,584 4.00 7,733 -0.74 0.7447
2022-07-26 2022-06-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 39,553 -594 -1.48 7,791 -18.41 0.7643
2022-04-12 2022-03-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 40,147 434 1.09 9,549 -5.62 0.8975
2022-01-18 2021-12-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 39,713 -1,881 -4.52 10,118 2.74 0.8341
2021-10-07 2021-09-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 41,594 394 0.96 9,848 0.71 0.8800
2021-08-13 2021-06-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 41,200 -199 -0.48 9,779 6.72 0.8897
2021-04-29 2021-03-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 41,399 -281 -0.67 9,163 6.32 1.0021
2021-01-29 2020-12-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 41,680 373 0.90 8,618 18.36 0.9826
2020-10-29 2020-09-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 41,307 -1,816 -4.21 7,281 3.01 0.9966
2020-08-05 2020-06-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 43,123 113 0.26 7,068 24.83 1.0620
2020-04-28 2020-03-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 43,010 -41,407 -49.05 5,662 -62.36 1.0722
2020-02-04 2019-12-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 84,417 -658 -0.77 15,041 5.48 2.6903
2019-10-31 2019-09-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 85,075 1,483 1.77 14,259 1.70 2.7835
2019-07-23 2019-06-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 83,592 1,201 1.46 14,021 5.51 2.7406
2019-04-12 2019-03-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 82,391 -873 -1.05 13,289 15.51 2.5819
2019-01-29 2018-12-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 83,264 4,794 6.11 11,505 -11.11 2.6481
2018-10-17 2018-09-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 78,470 207 0.26 12,943 4.91 2.6319
2018-07-23 2018-06-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 78,263 2,344 3.09 12,337 5.38 2.6093
2018-04-23 2018-03-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 75,919 627 0.83 11,707 -3.17 2.4991
2018-01-17 2017-12-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 75,292 -539 -0.71 12,090 8.08 2.3523
2017-10-23 2017-09-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 75,831 265 0.35 11,186 3.86 2.3307
2017-07-27 2017-06-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 75,566 3,388 4.69 10,770 7.16 2.3925
2017-04-21 2017-03-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 72,178 -4,678 -6.09 10,050 -0.66 2.3608
2017-01-24 2016-12-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 76,856 3,602 4.92 10,117 6.70 2.5458
2016-11-15 2016-09-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 73,254 1,094 1.52 9,482 6.29 2.1509
2016-08-25 2016-06-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 72,160 -2,440 -3.27 8,921 -1.36 2.1748
2016-05-11 2016-03-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 74,600 25,007 50.42 9,044 51.82 2.1443
2016-02-09 2015-12-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 49,593 2,149 4.53 5,957 7.62 3.4099
2015-11-10 2015-09-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 47,444 19,195 67.95 5,535 53.75 3.9323
2015-08-12 2015-06-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 28,249 15,611 123.52 3,600 114.67 3.2983
2015-05-08 2015-03-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 12,638 12,638 1,677 1.7139
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.