Cloudflare, Inc.
MX ˙ BMV ˙ US18915M1071
SecurityMX:NET / Cloudflare, Inc.
InstitutionWhetstone Capital Advisors, LLC
Latest Disclosed Ownership293,031 shares
Latest Disclosed Value $ 60,464,017
Whetstone Capital Advisors, LLC ownership in NET / Cloudflare, Inc.

On May 15, 2026 - Whetstone Capital Advisors, LLC filed a 13F-HR form disclosing ownership of 293,031 shares of Cloudflare, Inc. (MX:NET) valued at $60,464,017 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 293,031 shares of Cloudflare, Inc.. This represents a change in shares of 0.00% during the quarter.

Whetstone Capital Advisors, LLC has a history of taking positions in derivatives of the underlying security (NET) in the form of stock options.

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: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)
2026-05-15 2026-03-31 13F CLOUDFLARE CL A COM 18915M107 293,031 0 0.00 60,464 4.66 20.9676
2026-02-13 2025-12-31 13F CLOUDFLARE CL A COM 18915M107 293,031 -18,154 -5.83 57,771 -13.49 18.0237
2025-11-14 2025-09-30 13F CLOUDFLARE CL A COM 18915M107 311,185 -4,500 -1.43 66,777 8.02 18.4921
2025-08-14 2025-06-30 13F CLOUDFLARE CL A COM 18915M107 315,685 -1,275 -0.40 61,821 176,528.57 17.4651
2025-05-14 2025-03-31 13F CLOUDFLARE CL A COM 18915M107 316,960 -1,107 -0.35 36 2.94 15.7817
2025-02-13 2024-12-31 13F CLOUDFLARE CL A COM 18915M107 318,067 -5,205 -1.61 34 30.77 11.0401
2024-11-13 2024-09-30 13F CLOUDFLARE CL A COM 18915M107 323,272 -1,976 -0.61 26 0.00 12.6016
2024-08-14 2024-06-30 13F CLOUDFLARE CL A COM 18915M107 325,248 2,189 0.68 27 -16.13 12.5029
2024-05-14 2024-03-31 13F CLOUDFLARE CL A COM 18915M107 323,059 -130 -0.04 31 19.23 13.6936
2024-02-14 2023-12-31 13F CLOUDFLARE CL A COM 18915M107 323,189 -2,233 -0.69 27 30.00 13.5324
2023-11-14 2023-09-30 13F CLOUDFLARE CL A COM 18915M107 325,422 -19,967 -5.78 21 -9.09 11.3472
2023-08-14 2023-06-30 13F Cloudflare CL A COM 18915M107 345,389 52,004 17.73 23 22.22 12.5987
2023-05-15 2023-03-31 13F Cloudflare CL A COM 18915M107 293,385 -7,397 -2.46 18 38.46 11.6613
2023-02-14 2022-12-31 13F Cloudflare CL A COM 18915M107 300,782 -45,303 -13.09 14 -99.93 11.7857
2022-11-14 2022-09-30 13F Cloudflare CL A COM 18915M107 346,085 -4,453 -1.27 19,142 24.82 11.8068
2022-08-15 2022-06-30 13F Cloudflare CL A COM 18915M107 350,538 60,473 20.85 15,336 -55.83 8.9895
2022-05-16 2022-03-31 13F Cloudflare CL A COM 18915M107 290,065 -163,402 -36.03 34,721 -41.77 11.7267
2022-02-14 2021-12-31 13F Cloudflare CL A COM 18915M107 453,467 -48,025 -9.58 59,631 5.55 12.2232
2021-11-12 2021-09-30 13F Cloudflare CL A COM 18915M107 501,492 -5,077 -1.00 56,493 5.37 9.8787
2021-08-13 2021-06-30 13F Cloudflare CL A COM 18915M107 506,569 -11,872 -2.29 53,615 47.19 9.9601
2021-05-12 2021-03-31 13F Cloudflare CL A COM 18915M107 518,441 -8,789 -1.67 36,426 -9.08 7.6840
2021-02-11 2020-12-31 13F Cloudflare CL A COM 18915M107 527,230 -4,819 -0.91 40,064 83.39 8.2763
2020-11-12 2020-09-30 13F Cloudflare CL A COM 18915M107 532,049 72,700 15.83 21,846 32.29 4.0467
2020-08-13 2020-06-30 13F Cloudflare CL A COM 18915M107 459,349 -8,600 -1.84 16,514 50.30 3.4799
2020-05-13 2020-03-31 13F Cloudflare CL A COM 18915M107 467,949 21,604 4.84 10,987 44.28 3.7803
2020-02-12 2019-12-31 13F Cloudflare CL A COM 18915M107 446,345 133,745 42.78 7,615 31.18 2.3352
2019-11-14 2019-09-30 13F Cloudflare CL A COM 18915M107 312,600 312,600 5,805 1.5595
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 CLOUDFLARE CL A COM Put 100,000 20,634 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.