Fastly, Inc.
MX ˙ BMV ˙ US31188V1008
SecurityMX:FSLY / Fastly, Inc.
InstitutionMillennium Management Llc
ManagerIsrael Englander
Latest Disclosed Ownership1,414,618 shares
Latest Disclosed Value $ 41,108,799
Millennium Management Llc ownership in FSLY / Fastly, Inc.

On May 15, 2026 - Millennium Management Llc filed a 13F-HR form disclosing ownership of 1,414,618 shares of Fastly, Inc. (MX:FSLY) valued at $41,108,799 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 404,645 shares of Fastly, Inc.. This represents a change in shares of 249.59% during the quarter.

Millennium Management Llc has a history of taking positions in derivatives of the underlying security (FSLY) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD and put options representing 150,000 of underlying shares valued at $4,359,000 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

MX:FSLY / Fastly, Inc. Historical Put/Call Ratio
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 1,414,618 1,009,973 249.59 41,109 898.01 0.0171
2026-02-17 2025-12-31 13F FASTLY CL A 31188V100 404,645 -91,358 -18.42 4,119 -2.85 0.0017
2025-11-14 2025-09-30 13F FASTLY CL A 31188V100 496,003 -164,493 -24.90 4,241 -9.07 0.0018
2025-08-14 2025-06-30 13F FASTLY CL A 31188V100 660,496 574,744 670.24 4,663 760.33 0.0023
2025-05-15 2025-03-31 13F FASTLY CL A 31188V100 85,752 -107,856 -55.71 543 -70.33 0.0003
2025-02-14 2024-12-31 13F FASTLY CL A 31188V100 193,608 193,608 1,828 0.0009
2024-11-14 2024-09-30 13F FASTLY CL A 31188V100 0 -249,817 -100.00 0 -100.00
2024-08-14 2024-06-30 13F FASTLY CL A 31188V100 249,817 -165,044 -39.78 1,841 -65.78 0.0009
2024-05-15 2024-03-31 13F FASTLY CL A 31188V100 414,861 228,725 122.88 5,381 62.39 0.0023
2024-02-14 2023-12-31 13F FASTLY CL A 31188V100 186,136 142,054 322.25 3,313 292.07 0.0014
2023-11-14 2023-09-30 13F FASTLY CL A 31188V100 44,082 -107,576 -70.93 845 -64.66 0.0004
2023-08-14 2023-06-30 13F FASTLY CL A 31188V100 151,658 -1,112,335 -88.00 2,392 -89.35 0.0012
2023-05-15 2023-03-31 13F FASTLY CL A 31188V100 1,263,993 1,014,700 407.03 22,449 999.36 0.0129
2023-02-14 2022-12-31 13F FASTLY CL A 31188V100 249,293 237,725 2,055.02 2,042 1,826.42 0.0011
2022-11-14 2022-09-30 13F FASTLY CL A 31188V100 11,568 -1,206,420 -99.05 106 -99.25 0.0001
2022-08-15 2022-06-30 13F FASTLY CL A 31188V100 1,217,988 595,264 95.59 14,141 30.66 0.0088
2022-05-16 2022-03-31 13F FASTLY CL A 31188V100 622,724 434,502 230.85 10,823 62.22 0.0057
2022-02-14 2021-12-31 13F FASTLY CL A 31188V100 188,222 174,414 1,263.14 6,672 1,095.70 0.0034
2021-11-15 2021-09-30 13F FASTLY CL A 31188V100 13,808 -419,756 -96.82 558 -97.84 0.0003
2021-08-16 2021-06-30 13F FASTLY CL A 31188V100 433,564 423,034 4,017.42 25,840 3,549.72 0.0159
2021-05-17 2021-03-31 13F FASTLY CL A 31188V100 10,530 -17,862 -62.91 708 -71.46 0.0005
2021-02-16 2020-12-31 13F FASTLY CL A 31188V100 28,392 16,153 131.98 2,481 116.30 0.0018
2020-11-16 2020-09-30 13F FASTLY CL A 31188V100 12,239 -55,477 -81.93 1,147 -80.10 0.0014
2020-08-14 2020-06-30 13F FASTLY CL A 31188V100 67,716 -95,468 -58.50 5,765 86.15 0.0079
2020-05-14 2020-03-31 13F FASTLY CL A 31188V100 163,184 113,600 229.11 3,097 211.26 0.0070
2020-02-14 2019-12-31 13F FASTLY CL A 31188V100 49,584 19,274 63.59 995 36.86 0.0012
2019-11-14 2019-09-30 13F FASTLY CL A 31188V100 30,310 10,072 49.77 727 77.32 0.0011
2019-08-15 2019-06-30 13F/A-1 FASTLY CL A 31188V100 20,238 20,238 410 0.0006
2019-08-14 2019-06-30 13F FASTLY CL A 31188V100 20,238 410 0.0006
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2024-11-14 2024-09-30 13F FASTLY CL A Call 0 -100.00 0 -100.00 n/a n/a n/a
2024-08-14 2024-06-30 13F FASTLY CL A Call 14,700 -56.76 108 -75.45 n/a n/a n/a
2024-05-15 2024-03-31 13F FASTLY CL A Call 34,000 -40.04 441 -56.39 n/a n/a n/a
2024-02-14 2023-12-31 13F FASTLY CL A Call 56,700 10.53 1,009 2.64 n/a n/a n/a
2023-11-14 2023-09-30 13F FASTLY CL A Call 51,300 983 n/a n/a n/a
2023-08-14 2023-06-30 13F FASTLY CL A Call 0 -100.00 0 -100.00 n/a n/a n/a
2023-05-15 2023-03-31 13F FASTLY CL A Call 302,700 5,376 n/a n/a n/a
2021-11-15 2021-09-30 13F FASTLY CL A Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-08-16 2021-06-30 13F FASTLY CL A Call 50,000 66.67 2,980 47.67 n/a n/a n/a
2021-05-17 2021-03-31 13F FASTLY CL A Call 30,000 2,018 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-15 2026-03-31 13F FASTLY CL A Put 150,000 0.00 4,359 185.46 n/a n/a n/a
2026-02-17 2025-12-31 13F FASTLY CL A Put 150,000 0.00 1,527 19.11 n/a n/a n/a
2025-11-14 2025-09-30 13F FASTLY CL A Put 150,000 0.00 1,282 21.06 n/a n/a n/a
2025-08-14 2025-06-30 13F FASTLY CL A Put 150,000 0.00 1,059 11.59 n/a n/a n/a
2025-05-15 2025-03-31 13F FASTLY CL A Put 150,000 -52.71 950 -68.30 n/a n/a n/a
2025-02-14 2024-12-31 13F FASTLY CL A Put 317,200 5.73 2,994 31.84 n/a n/a n/a
2024-11-14 2024-09-30 13F FASTLY CL A Put 300,000 -0.79 2,271 1.93 n/a n/a n/a
2024-08-14 2024-06-30 13F FASTLY CL A Put 302,400 -0.62 2,229 -43.54 n/a n/a n/a
2024-05-15 2024-03-31 13F FASTLY CL A Put 304,300 -32.83 3,947 -51.06 n/a n/a n/a
2024-02-14 2023-12-31 13F FASTLY CL A Put 453,000 -0.35 8,063 -7.47 n/a n/a n/a
2023-11-14 2023-09-30 13F FASTLY CL A Put 454,600 46.88 8,715 78.57 n/a n/a n/a
2023-08-14 2023-06-30 13F FASTLY CL A Put 309,500 -10.99 4,881 -20.97 n/a n/a n/a
2023-05-15 2023-03-31 13F FASTLY CL A Put 347,700 15.90 6,175 151.32 n/a n/a n/a
2023-02-14 2022-12-31 13F FASTLY CL A Put 300,000 1,204.35 2,457 1,064.45 n/a n/a n/a
2022-11-14 2022-09-30 13F FASTLY CL A Put 23,000 -16.06 211 -33.65 n/a n/a n/a
2022-08-15 2022-06-30 13F FASTLY CL A Put 27,400 19.13 318 -20.50 n/a n/a n/a
2022-05-16 2022-03-31 13F FASTLY CL A Put 23,000 0.00 400 -50.92 n/a n/a n/a
2022-02-14 2021-12-31 13F FASTLY CL A Put 23,000 0.00 815 -12.37 n/a n/a n/a
2021-11-15 2021-09-30 13F FASTLY CL A Put 23,000 0.00 930 -32.17 n/a n/a n/a
2021-08-16 2021-06-30 13F FASTLY CL A Put 23,000 -91.09 1,371 -92.10 n/a n/a n/a
2021-05-17 2021-03-31 13F FASTLY CL A Put 258,000 17,358 n/a n/a n/a
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.