Cloudflare, Inc.
US ˙ NYSE ˙ US18915M1071

SecurityNET / Cloudflare, Inc.
InstitutionCitigroup Inc
Latest Disclosed Ownership805,193 shares
Latest Disclosed Value $ 166,143,524
Citigroup Inc ownership in NET / Cloudflare, Inc.

On May 11, 2026 - Citigroup Inc filed a 13F-HR form disclosing ownership of 805,193 shares of Cloudflare, Inc. (US:NET) valued at $166,143,524 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 807,403 shares of Cloudflare, Inc.. This represents a change in shares of -0.27% during the quarter. The current value of the position is $213,641,859 USD.

Citigroup Inc has a history of taking positions in derivatives of the underlying security (NET) 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 35,000 of underlying shares valued at $7,221,900 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.

NET / Cloudflare, 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)
2026-05-11 2026-03-31 13F CLOUDFLARE CL A COM 18915M107 805,193 -2,210 -0.27 166,144 4.37 0.0357
2026-02-13 2025-12-31 13F CLOUDFLARE CL A COM 18915M107 807,403 40,424 5.27 159,180 -3.29 0.0703
2025-11-10 2025-09-30 13F CLOUDFLARE CL A COM 18915M107 766,979 450,219 142.13 164,586 165.33 0.0734
2025-08-11 2025-06-30 13F CLOUDFLARE CL A COM 18915M107 316,760 139,938 79.14 62,031 211.31 0.0305
2025-05-12 2025-03-31 13F CLOUDFLARE CL A COM 18915M107 176,822 35,535 25.15 19,926 30.98 0.0102
2025-02-12 2024-12-31 13F CLOUDFLARE CL A COM 18915M107 141,287 -71,922 -33.73 15,214 -11.79 0.0090
2024-11-12 2024-09-30 13F CLOUDFLARE CL A COM 18915M107 213,209 90,956 74.40 17,246 70.31 0.0100
2024-08-12 2024-06-30 13F CLOUDFLARE CL A COM 18915M107 122,253 -10,212 -7.71 10,126 -21.05 0.0065
2024-05-10 2024-03-31 13F CLOUDFLARE CL A COM 18915M107 132,465 -24,081 -15.38 12,827 -1.60 0.0084
2024-02-09 2023-12-31 13F CLOUDFLARE CL A COM 18915M107 156,546 24,274 18.35 13,034 56.32 0.0092
2023-12-06 2023-09-30 13F/A-1 CLOUDFLARE CL A COM 18915M107 132,272 19,256 17.04 8,338 12.87 0.0062
2023-11-09 2023-09-30 13F CLOUDFLARE CL A COM 18915M107 132,272 19,256 8,338 0.0025
2023-08-10 2023-06-30 13F CLOUDFLARE CL A COM 18915M107 113,016 -10,553 -8.54 7,388 -3.05 0.0048
2023-05-11 2023-03-31 13F CLOUDFLARE CL A COM 18915M107 123,569 18,231 17.31 7,619 60.00 0.0053
2023-02-09 2022-12-31 13F CLOUDFLARE CL A COM 18915M107 105,338 -34,058 -24.43 4,762 -38.24 0.0038
2022-11-10 2022-09-30 13F CLOUDFLARE CL A COM 18915M107 139,396 -234,978 -62.77 7,710 -52.93 0.0055
2022-08-10 2022-06-30 13F CLOUDFLARE CL A COM 18915M107 374,374 -11,503 -2.98 16,379 -64.54 0.0122
2022-05-12 2022-03-31 13F CLOUDFLARE CL A COM 18915M107 385,877 57,602 17.55 46,189 7.00 0.0281
2022-02-10 2021-12-31 13F CLOUDFLARE CL A COM 18915M107 328,275 150,104 84.25 43,169 115.09 0.0231
2021-11-10 2021-09-30 13F CLOUDFLARE CL A COM 18915M107 178,171 29,990 20.24 20,070 27.96 0.0119
2021-08-10 2021-06-30 13F CLOUDFLARE CL A COM 18915M107 148,181 -45,476 -23.48 15,684 15.27 0.0094
2021-05-13 2021-03-31 13F CLOUDFLARE CL A COM 18915M107 193,657 68,414 54.63 13,606 42.95 0.0088
2021-02-11 2020-12-31 13F CLOUDFLARE CL A COM 18915M107 125,243 -58,542 -31.85 9,518 26.13 0.0056
2020-11-12 2020-09-30 13F CLOUDFLARE CL A COM 18915M107 183,785 96,491 110.54 7,546 140.47 0.0049
2020-08-12 2020-06-30 13F CLOUDFLARE CL A COM 18915M107 87,294 86,994 28,998.00 3,138 44,728.57 0.0024
2020-05-12 2020-03-31 13F CLOUDFLARE CL A COM 18915M107 300 -10,490 -97.22 7 -96.20 0.0000
2020-02-12 2019-12-31 13F CLOUDFLARE CL A COM 18915M107 10,790 10,790 184 0.0001
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
(%)
2022-02-10 2021-12-31 13F CLOUDFLARE CL A COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-11-10 2021-09-30 13F CLOUDFLARE CL A COM Call 75,000 8,449 n/a n/a n/a
2021-05-13 2021-03-31 13F CLOUDFLARE CL A COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-02-11 2020-12-31 13F CLOUDFLARE CL A COM Call 19,900 -13.48 1,512 60.17 n/a n/a n/a
2020-11-12 2020-09-30 13F CLOUDFLARE CL A COM Call 23,000 147.31 944 182.63 n/a n/a n/a
2020-08-12 2020-06-30 13F CLOUDFLARE CL A COM Call 9,300 334 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
(%)
2026-05-11 2026-03-31 13F CLOUDFLARE CL A COM Put 35,000 7,222 n/a n/a n/a
2022-02-10 2021-12-31 13F CLOUDFLARE CL A COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2021-11-10 2021-09-30 13F CLOUDFLARE CL A COM Put 75,000 8,449 n/a n/a n/a
2021-05-13 2021-03-31 13F CLOUDFLARE CL A COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2021-02-11 2020-12-31 13F CLOUDFLARE CL A COM Put 60,600 46.02 4,605 170.25 n/a n/a n/a
2020-11-12 2020-09-30 13F CLOUDFLARE CL A COM Put 41,500 615.52 1,704 715.31 n/a n/a n/a
2020-08-12 2020-06-30 13F CLOUDFLARE CL A COM Put 5,800 209 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.