Arista Networks, Inc.
MX ˙ BMV ˙ US0404132054
SecurityMX:ANET / Arista Networks, Inc.
InstitutionKorea Investment CORP
Latest Disclosed Ownership832,678 shares
Latest Disclosed Value $ 102,236,205
Korea Investment CORP reports 3.76% decrease in ownership of ANET / Arista Networks, Inc.

On May 13, 2026 - Korea Investment CORP filed a 13F-HR form disclosing ownership of 832,678 shares of Arista Networks, Inc. (MX:ANET) valued at $102,236,205 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 865,234 shares of Arista Networks, Inc.. This represents a change in shares of -3.76% 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)
2026-05-13 2026-03-31 13F ARISTA NETWORKS COM SHS 040413205 832,678 -32,556 -3.76 102,236 -9.82 0.2118
2026-02-13 2025-12-31 13F ARISTA NETWORKS COM SHS 040413205 865,234 4,997 0.58 113,372 -9.55 0.2232
2025-11-13 2025-09-30 13F ARISTA NETWORKS COM SHS 040413205 860,237 -135,854 -13.64 125,345 23.00 0.2578
2025-08-13 2025-06-30 13F ARISTA NETWORKS COM SHS 040413205 996,091 -83,583 -7.74 101,910 21.82 0.2267
2025-05-14 2025-03-31 13F ARISTA NETWORKS COM SHS 040413205 1,079,674 25,214 2.39 83,653 -28.23 0.2027
2025-02-12 2024-12-31 13F ARISTA NETWORKS COM SHS 040413205 1,054,460 761,433 259.85 116,549 3.63 0.2763
2024-11-13 2024-09-30 13F ARISTA NETWORKS COM 040413106 293,027 -118,001 -28.71 112,470 -21.93 0.2669
2024-08-13 2024-06-30 13F ARISTA NETWORKS COM 040413106 411,028 44,295 12.08 144,057 35.46 0.3630
2024-05-14 2024-03-31 13F ARISTA NETWORKS COM 040413106 366,733 -110,670 -23.18 106,345 -5.41 0.2699
2024-02-13 2023-12-31 13F ARISTA NETWORKS COM 040413106 477,403 -96,244 -16.78 112,433 6.56 0.2952
2023-11-13 2023-09-30 13F ARISTA NETWORKS COM 040413106 573,647 19,817 3.58 105,511 17.56 0.3108
2023-08-11 2023-06-30 13F ARISTA NETWORKS COM 040413106 553,830 -265,629 -32.42 89,754 -34.75 0.2522
2023-05-12 2023-03-31 13F ARISTA NETWORKS COM 040413106 819,459 -1,634 -0.20 137,554 38.05 0.4005
2023-02-13 2022-12-31 13F ARISTA NETWORKS COM 040413106 821,093 298,574 57.14 99,640 68.92 0.3130
2022-11-10 2022-09-30 13F ARISTA NETWORKS COM 040413106 522,519 219,613 72.50 58,987 107.74 0.1816
2022-08-12 2022-06-30 13F ARISTA NETWORKS COM 040413106 302,906 66,206 27.97 28,394 -13.69 0.0868
2022-05-13 2022-03-31 13F ARISTA NETWORKS COM 040413106 236,700 37,100 18.59 32,897 14.65 0.0814
2022-02-09 2021-12-31 13F ARISTA NETWORKS COM 040413106 199,600 199,600 28,693 0.0746
2021-11-10 2021-09-30 13F ARISTA NETWORKS COM 040413106 0 -600 -100.00 0 -100.00
2021-08-12 2021-06-30 13F ARISTA NETWORKS COM 040413106 600 600 217 0.0006
2021-05-13 2021-03-31 13F ARISTA NETWORKS COM 040413106 0 -13,400 -100.00 0 -100.00
2021-02-10 2020-12-31 13F ARISTA NETWORKS COM 040413106 13,400 -27,600 -67.32 3,894 -54.10 0.0117
2020-11-12 2020-09-30 13F ARISTA NETWORKS COM 040413106 41,000 31,000 310.00 8,484 304.00 0.0300
2020-08-12 2020-06-30 13F ARISTA NETWORKS COM 040413106 10,000 -12,800 -56.14 2,100 -54.53 0.0077
2020-05-14 2020-03-31 13F ARISTA NETWORKS COM 040413106 22,800 6,200 37.35 4,618 36.79 0.0203
2020-02-11 2019-12-31 13F ARISTA NETWORKS COM 040413106 16,600 7,800 88.64 3,376 60.61 0.0123
2019-11-12 2019-09-30 13F ARISTA NETWORKS COM 040413106 8,800 200 2.33 2,102 -5.87 0.0089
2019-08-12 2019-06-30 13F ARISTA NETWORKS COM 040413106 8,600 -4,500 -34.35 2,233 -45.79 0.0096
2019-05-15 2019-03-31 13F ARISTA NETWORKS COM 040413106 13,100 3,296 33.62 4,119 99.37 0.0185
2019-02-13 2018-12-31 13F ARISTA NETWORKS COM 040413106 9,804 -24,100 -71.08 2,066 -77.08 0.0112
2018-11-13 2018-09-30 13F ARISTA NETWORKS COM 040413106 33,904 -8,544 -20.13 9,014 -17.53 0.0416
2018-08-13 2018-06-30 13F ARISTA NETWORKS COM 040413106 42,448 21,400 101.67 10,930 103.39 0.0498
2018-05-09 2018-03-31 13F ARISTA NETWORKS COM 040413106 21,048 2,848 15.65 5,374 25.33 0.0250
2018-02-12 2017-12-31 13F ARISTA NETWORKS COM 040413106 18,200 -2,000 -9.90 4,288 11.96 0.0195
2017-10-25 2017-09-30 13F ARISTA NETWORKS COM 040413106 20,200 2,900 16.76 3,830 47.82 0.0177
2017-07-31 2017-06-30 13F ARISTA NETWORKS COM 040413106 17,300 17,300 2,591 0.0121
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.