Dropbox, Inc.
MX ˙ BMV ˙ US26210C1045
SecurityMX:DBX / Dropbox, Inc.
InstitutionCapital Fund Management S.a.
Latest Disclosed Ownership376,427 shares
Latest Disclosed Value $ 8,552,421
Capital Fund Management S.a. ownership in DBX / Dropbox, Inc.

On May 14, 2026 - Capital Fund Management S.a. filed a 13F-HR form disclosing ownership of 376,427 shares of Dropbox, Inc. (MX:DBX) valued at $8,552,421 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 263,026 shares of Dropbox, Inc.. This represents a change in shares of 43.11% during the quarter.

Capital Fund Management S.a. has a history of taking positions in derivatives of the underlying security (DBX) in the form of stock options. The firm currently holds call options representing 25,300 of underlying shares valued at $574,816 USD and put options representing 17,200 of underlying shares valued at $390,784 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:DBX / Dropbox, 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)
2026-05-14 2026-03-31 13F DROPBOX INC CL A DROPBOX INC CL A 26210C104 376,427 113,401 43.11 8,552 16.96 0.0387
2026-02-17 2025-12-31 13F DROPBOX INC CL A DROPBOX INC CL A 26210C104 263,026 180,027 216.90 7,312 191.66 0.0203
2025-11-13 2025-09-30 13F DROPBOX CL A 26210C104 82,999 82,999 2,507 0.0066
2022-05-12 2022-03-31 13F DROPBOX CL A 26210C104 0 -23,737 -100.00 0 -100.00
2022-02-10 2021-12-31 13F DROPBOX CL A 26210C104 23,737 -927 -3.76 583 -19.17 0.0042
2021-11-12 2021-09-30 13F DROPBOX CL A 26210C104 24,664 -10,609 -30.08 721 -32.65 0.0053
2021-08-12 2021-06-30 13F DROPBOX CL A 26210C104 35,273 -404,683 -91.98 1,069 -90.89 0.0085
2021-05-14 2021-03-31 13F DROPBOX CL A 26210C104 439,956 207,507 89.27 11,729 127.39 0.1295
2021-02-12 2020-12-31 13F DROPBOX CL A 26210C104 232,449 175,845 310.66 5,158 373.21 0.0486
2020-11-13 2020-09-30 13F DROPBOX CL A 26210C104 56,604 56,604 1,090 0.0135
2020-05-13 2020-03-31 13F Dropbox CL A 26210C104 0 -44,625 -100.00 0 -100.00
2020-02-13 2019-12-31 13F Dropbox CL A 26210C104 44,625 31,125 230.56 799 193.75 0.0063
2019-11-13 2019-09-30 13F Dropbox CL A 26210C104 13,500 3,887 40.43 272 12.86 0.0024
2019-08-12 2019-06-30 13F Dropbox CL A 26210C104 9,613 9,613 241 0.0022
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
(%)
2026-05-14 2026-03-31 13F DROPBOX INC CL A DROPBOX INC CL A Call 25,300 -42.11 575 -52.72 n/a n/a n/a
2026-02-17 2025-12-31 13F DROPBOX INC CL A DROPBOX INC CL A Call 43,700 -24.91 1,215 -30.94 n/a n/a n/a
2025-11-13 2025-09-30 13F DROPBOX CL A Call 58,200 11.49 1,758 17.83 n/a n/a n/a
2025-08-13 2025-06-30 13F DROPBOX CL A Call 52,200 -6.28 1,493 0.34 n/a n/a n/a
2025-05-14 2025-03-31 13F DROPBOX CL A Call 55,700 -62.69 1,488 -66.84 n/a n/a n/a
2025-02-13 2024-12-31 13F DROPBOX CL A Call 149,300 -54.23 4,485 -45.94 n/a n/a n/a
2024-11-13 2024-09-30 13F DROPBOX CL A Call 326,200 -27.20 8,295 -17.61 n/a n/a n/a
2024-08-13 2024-06-30 13F DROPBOX CL A Call 448,100 16.27 10,069 7.51 n/a n/a n/a
2024-05-15 2024-03-31 13F DROPBOX CL A Call 385,400 508.85 9,365 401.88 n/a n/a n/a
2024-02-14 2023-12-31 13F DROPBOX CL A Call 63,300 1,866 n/a n/a n/a
2022-11-14 2022-09-30 13F DROPBOX CL A Call 0 -100.00 0 -100.00 n/a n/a n/a
2022-08-12 2022-06-30 13F DROPBOX CL A Call 61,500 -29.79 1,291 -36.64 n/a n/a n/a
2022-05-12 2022-03-31 13F DROPBOX CL A Call 87,600 36.24 2,037 29.11 n/a n/a n/a
2022-02-10 2021-12-31 13F DROPBOX CL A Call 64,300 -10.82 1,578 -25.12 n/a n/a n/a
2021-11-12 2021-09-30 13F DROPBOX CL A Call 72,100 2,107 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
(%)
2026-05-14 2026-03-31 13F DROPBOX INC CL A DROPBOX INC CL A Put 17,200 -66.14 391 -72.38 n/a n/a n/a
2026-02-17 2025-12-31 13F DROPBOX INC CL A DROPBOX INC CL A Put 50,800 19.25 1,412 9.80 n/a n/a n/a
2025-11-13 2025-09-30 13F DROPBOX CL A Put 42,600 -7.19 1,287 -1.98 n/a n/a n/a
2025-08-13 2025-06-30 13F DROPBOX CL A Put 45,900 10.60 1,313 18.41 n/a n/a n/a
2025-05-14 2025-03-31 13F DROPBOX CL A Put 41,500 -85.20 1,108 -86.85 n/a n/a n/a
2025-02-13 2024-12-31 13F DROPBOX CL A Put 280,400 -39.70 8,423 -28.76 n/a n/a n/a
2024-11-13 2024-09-30 13F DROPBOX CL A Put 465,000 11.03 11,825 25.65 n/a n/a n/a
2024-08-13 2024-06-30 13F DROPBOX CL A Put 418,800 44.61 9,410 33.72 n/a n/a n/a
2024-05-15 2024-03-31 13F DROPBOX CL A Put 289,600 110.01 7,037 73.11 n/a n/a n/a
2024-02-14 2023-12-31 13F DROPBOX CL A Put 137,900 1,265.35 4,065 1,378.18 n/a n/a n/a
2023-11-14 2023-09-30 13F DROPBOX CL A Put 10,100 275 n/a n/a n/a
2022-11-14 2022-09-30 13F DROPBOX CL A Put 0 -100.00 0 -100.00 n/a n/a n/a
2022-08-12 2022-06-30 13F DROPBOX CL A Put 12,600 -87.51 264 -88.74 n/a n/a n/a
2022-05-12 2022-03-31 13F DROPBOX CL A Put 100,900 -10.07 2,346 -14.82 n/a n/a n/a
2022-02-10 2021-12-31 13F DROPBOX CL A Put 112,200 -27.10 2,753 -38.77 n/a n/a n/a
2021-11-12 2021-09-30 13F DROPBOX CL A Put 153,900 4,497 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.