Fastly, Inc.
US ˙ NasdaqGS ˙ US31188V1008

SecurityFSLY / Fastly, Inc.
InstitutionState Street Corp
Latest Disclosed Ownership3,254,929 shares
Latest Disclosed Value $ 94,588,237
State Street Corp reports 2.91% increase in ownership of FSLY / Fastly, Inc.

On May 15, 2026 - State Street Corp filed a 13F-HR form disclosing ownership of 3,254,929 shares of Fastly, Inc. (US:FSLY) valued at $94,588,237 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 3,162,764 shares of Fastly, Inc.. This represents a change in shares of 2.91% during the quarter. The current value of the position is $64,805,636 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.

Upgrade to unlock premium data and export to Excel .

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 FASTLY CL A 31188V100 3,254,929 92,165 2.91 94,588 193.79 0.0033
2026-02-13 2025-12-31 13F FASTLY CL A 31188V100 3,162,764 7,613 0.24 32,197 19.35 0.0011
2025-11-14 2025-09-30 13F FASTLY CL A 31188V100 3,155,151 28,055 0.90 26,977 22.19 0.0009
2025-08-14 2025-06-30 13F FASTLY CL A 31188V100 3,127,096 71,053 2.33 22,077 14.13 0.0008
2025-05-15 2025-03-31 13F FASTLY CL A 31188V100 3,056,043 -21,536 -0.70 19,345 -33.42 0.0008
2025-02-14 2024-12-31 13F FASTLY CL A 31188V100 3,077,579 93,690 3.14 29,052 28.62 0.0011
2024-11-14 2024-09-30 13F FASTLY CL A 31188V100 2,983,889 -62,771 -2.06 22,588 0.60 0.0009
2024-08-14 2024-06-30 13F FASTLY CL A 31188V100 3,046,660 284,806 10.31 22,454 -37.32 0.0010
2024-05-15 2024-03-31 13F FASTLY CL A 31188V100 2,761,854 68,744 2.55 35,821 -25.27 0.0016
2024-02-14 2023-12-31 13F FASTLY CL A 31188V100 2,693,110 71,438 2.72 47,937 -4.62 0.0023
2023-11-14 2023-09-30 13F FASTLY CL A 31188V100 2,621,672 19,518 0.75 50,257 22.47 0.0028
2023-08-14 2023-06-30 13F FASTLY CL A 31188V100 2,602,154 -8,519 -0.33 41,036 -11.50 0.0022
2023-05-15 2023-03-31 13F FASTLY CL A 31188V100 2,610,673 152,481 6.20 46,366 130.30 0.0026
2023-05-15 2022-12-31 13F/A-99 FASTLY CL A 31188V100 2,458,192 144,660 6.25 20,133 -5.00 0.0012
2023-05-15 2022-12-31 13F FASTLY CL A 31188V100 2,458,192 144,660 20,133 0.0012
2022-11-15 2022-09-30 13F FASTLY CL A 31188V100 2,313,532 24,983 1.09 21,192 -20.24 0.0013
2022-08-15 2022-06-30 13F FASTLY CL A 31188V100 2,288,549 638,759 38.72 26,570 -7.33 0.0016
2022-05-16 2022-03-31 13F FASTLY CL A 31188V100 1,649,790 68,731 4.35 28,673 -48.84 0.0014
2022-02-14 2021-12-31 13F FASTLY CL A 31188V100 1,581,059 80,995 5.40 56,049 -7.61 0.0027
2021-11-15 2021-09-30 13F FASTLY CL A 31188V100 1,500,064 80,283 5.65 60,663 -28.31 0.0032
2021-08-16 2021-06-30 13F FASTLY CL A 31188V100 1,419,781 378,925 36.41 84,619 20.83 0.0045
2021-07-09 2021-03-31 13F/A-1 FASTLY CL A 31188V100 1,040,856 30,318 3.00 70,029 -20.68 0.0040
2021-05-17 2021-03-31 13F FASTLY CL A 31188V100 1,040,856 30,318 70,029 0.0040
2021-02-16 2020-12-31 13F FASTLY CL A 31188V100 1,010,538 68,958 7.32 88,291 0.10 0.0054
2020-11-10 2020-09-30 13F FASTLY CL A 31188V100 941,580 102,193 12.17 88,207 23.44 0.0060
2020-08-14 2020-06-30 13F FASTLY CL A 31188V100 839,387 785,387 1,454.42 71,457 6,871.41 0.0052
2020-06-19 2020-03-31 13F/A-1 FASTLY CL A 31188V100 54,000 36,335 205.69 1,025 188.73 0.0001
2020-05-11 2020-03-31 13F FASTLY CL A 31188V100 54,000 36,335 1,025 90.0156
2020-02-06 2019-12-31 13F FASTLY CL A 31188V100 17,665 -16,240 -47.90 355 -56.39 0.0000
2019-11-14 2019-09-30 13F FASTLY CL A 31188V100 33,905 33,905 814 0.0001
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.