Arista Networks, Inc.
MX ˙ BMV ˙ US0404132054
SecurityMX:ANET / Arista Networks, Inc.
InstitutionMercer Global Advisors Inc /adv
Latest Disclosed Ownership318,954 shares
Latest Disclosed Value $ 39,161,224
Mercer Global Advisors Inc /adv reports 21.20% decrease in ownership of ANET / Arista Networks, Inc.

On May 15, 2026 - Mercer Global Advisors Inc /adv filed a 13F-HR form disclosing ownership of 318,954 shares of Arista Networks, Inc. (MX:ANET) valued at $39,161,224 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 404,775 shares of Arista Networks, Inc.. This represents a change in shares of -21.20% during the quarter.

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)
2026-05-15 2026-03-31 13F ARISTA NETWORKS COM SHS 040413205 318,954 -85,821 -21.20 39,161 -23.66 0.0579
2026-02-17 2025-12-31 13F ARISTA NETWORKS COM SHS 040413205 404,775 93,794 30.16 51,300 13.21 0.0782
2025-11-14 2025-09-30 13F ARISTA NETWORKS COM SHS 040413205 310,981 20,784 7.16 45,313 52.67 0.0756
2025-08-14 2025-06-30 13F ARISTA NETWORKS COM SHS 040413205 290,197 32,742 12.72 29,680 48.79 0.0605
2025-05-15 2025-03-31 13F ARISTA NETWORKS COM SHS 040413205 257,455 127,987 98.86 19,948 39.39 0.0458
2025-02-14 2024-12-31 13F ARISTA NETWORKS COM SHS 040413205 129,468 129,468 14,310 0.0349
2024-05-15 2024-03-31 13F ARISTA NETWORKS COM 040413106 0 -42,626 -100.00 0 -100.00
2024-02-15 2023-12-31 13F ARISTA NETWORKS COM 040413106 42,626 1,207 2.91 10 42.86 0.0302
2023-11-15 2023-09-30 13F/A-1 ARISTA NETWORKS COM 040413106 41,419 1,382 3.45 8 16.67 0.0289
2023-11-14 2023-09-30 13F ARISTA NETWORKS COM 040413106 41,419 1,382 8 0.0289
2023-08-14 2023-06-30 13F ARISTA NETWORKS COM 040413106 40,037 15,847 65.51 6 50.00 0.0258
2023-05-16 2023-03-31 13F ARISTA NETWORKS COM 040413106 24,190 341 1.43 4 100.00 0.0184
2023-02-09 2022-12-31 13F ARISTA NETWORKS COM 040413106 23,849 10,329 76.40 3 -99.87 0.0145
2022-11-15 2022-09-30 13F ARISTA NETWORKS COM 040413106 13,520 -1,435 -9.60 1,526 8.84 0.0091
2022-08-10 2022-06-30 13F ARISTA NETWORKS COM 040413106 14,955 -1,094 -6.82 1,402 -37.13 0.0086
2022-05-10 2022-03-31 13F ARISTA NETWORKS COM 040413106 16,049 -484 -2.93 2,230 -6.18 0.0131
2022-02-04 2021-12-31 13F ARISTA NETWORKS COM 040413106 16,533 12,498 309.74 2,377 71.38 0.0147
2021-11-10 2021-09-30 13F ARISTA NETWORKS COM 040413106 4,035 -1,028 -20.30 1,387 -24.37 0.0097
2021-08-10 2021-06-30 13F ARISTA NETWORKS COM 040413106 5,063 -1,788 -26.10 1,834 -11.32 0.0141
2021-08-10 2021-03-31 13F/A-1 ARISTA NETWORKS COM 040413106 6,851 -128 -1.83 2,068 1.97 0.0188
2021-05-11 2021-03-31 13F ARISTA NETWORKS COM 040413106 6,851 -128 2,068 0.0198
2021-02-12 2020-12-31 13F ARISTA NETWORKS COM 040413106 6,979 321 4.82 2,028 47.17 0.0253
2020-12-10 2020-09-30 13F ARISTA NETWORKS COM 040413106 6,658 4,425 198.16 1,378 193.82 0.0207
2020-08-10 2020-06-30 13F ARISTA NETWORKS COM 040413106 2,233 2,233 469 0.0085
2019-11-12 2019-09-30 13F ARISTA NETWORKS INC COM COM 040413106 0 -1,491 -100.00 0 -100.00
2019-08-14 2019-06-30 13F ARISTA NETWORKS INC COM COM 040413106 1,491 265 21.62 387 0.26 0.0103
2019-04-23 2019-03-31 13F/A-1 ARISTA NETWORKS INC COM COM 040413106 1,226 1,226 386 0.0139
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.