Five9, Inc.
MX ˙ BMV ˙ US3383071012
SecurityMX:FIVN / Five9, Inc.
InstitutionCapital Fund Management S.a.
Latest Disclosed Ownership78,809 shares
Latest Disclosed Value $ 1,195,532
Capital Fund Management S.a. ownership in FIVN / Five9, Inc.

On May 14, 2026 - Capital Fund Management S.a. filed a 13F-HR form disclosing ownership of 78,809 shares of Five9, Inc. (MX:FIVN) valued at $1,195,532 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 147,153 shares of Five9, Inc.. This represents a change in shares of -46.44% during the quarter.

Capital Fund Management S.a. has a history of taking positions in derivatives of the underlying security (FIVN) in the form of stock options. The firm currently holds call options representing 38,100 of underlying shares valued at $577,977 USD and put options representing 32,300 of underlying shares valued at $489,991 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.

Upgrade to unlock premium data and export to Excel .

Institutional Put/Call Ratios
(Premium Subscription Required)

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:FIVN / Five9, 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 FIVE9 INC COM FIVE9 INC COM 338307101 78,809 -68,344 -46.44 1,196 -59.49 0.0054
2026-02-17 2025-12-31 13F FIVE9 INC COM FIVE9 INC COM 338307101 147,153 -88,381 -37.52 2,950 -48.24 0.0082
2025-11-13 2025-09-30 13F FIVE9 COM 338307101 235,534 170,396 261.59 5,700 230.57 0.0149
2025-08-13 2025-06-30 13F FIVE9 COM 338307101 65,138 -66,820 -50.64 1,725 -51.87 0.0048
2025-05-14 2025-03-31 13F FIVE9 COM 338307101 131,958 -68,314 -34.11 3,583 -55.99 0.0103
2025-02-13 2024-12-31 13F FIVE9 COM 338307101 200,272 -22,242 -10.00 8,139 27.33 0.0208
2024-11-13 2024-09-30 13F FIVE9 COM 338307101 222,514 38,451 20.89 6,393 -21.25 0.0175
2024-08-13 2024-06-30 13F FIVE9 COM 338307101 184,063 137,944 299.10 8,117 183.41 0.0239
2024-05-15 2024-03-31 13F FIVE9 COM 338307101 46,119 46,119 2,864 0.0083
2024-02-14 2023-12-31 13F FIVE9 COM 338307101 0 -34,754 -100.00 0 -100.00
2023-11-14 2023-09-30 13F FIVE9 COM 338307101 34,754 -59,911 -63.29 2,235 -71.38 0.0077
2023-08-14 2023-06-30 13F FIVE9 COM 338307101 94,665 11,417 13.71 7,805 29.72 0.0316
2023-05-15 2023-03-31 13F FIVE9 COM 338307101 83,248 -52,612 -38.73 6,018 -34.73 0.0288
2023-02-13 2022-12-31 13F FIVE9 COM 338307101 135,860 25,022 22.58 9,219 10.94 0.0619
2022-11-14 2022-09-30 13F FIVE9 COM 338307101 110,838 31,991 40.57 8,311 15.64 0.0653
2022-08-12 2022-06-30 13F FIVE9 COM 338307101 78,847 -30,278 -27.75 7,186 -40.35 0.0654
2022-05-12 2022-03-31 13F FIVE9 COM 338307101 109,125 66,179 154.10 12,047 104.29 0.0984
2022-02-10 2021-12-31 13F FIVE9 COM 338307101 42,946 42,946 5,897 0.0425
2019-02-13 2018-12-31 13F Five9 COM 338307101 0 -5,400 -100.00 0 -100.00
2018-11-14 2018-09-30 13F Five9 COM 338307101 5,400 -2,300 -29.87 236 -11.28 0.0013
2018-08-14 2018-06-30 13F Five9 COM 338307101 7,700 7,700 266 0.0014
2018-05-15 2018-03-31 13F Five9 COM 338307101 0 -13,200 -100.00 0 -100.00
2018-02-09 2017-12-31 13F Five9 COM 338307101 13,200 13,200 328 0.0018
2017-08-10 2017-06-30 13F Five9 COM 338307101 0 -50,600 -100.00 0 -100.00
2017-05-03 2017-03-31 13F Five9 COM 338307101 50,600 12,600 33.16 833 54.55 0.0069
2017-02-08 2016-12-31 13F Five9 COM 338307101 38,000 38,000 539 0.0046
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 FIVE9 INC COM FIVE9 INC COM Call 38,100 -58.13 578 -68.37 n/a n/a n/a
2026-02-17 2025-12-31 13F FIVE9 INC COM FIVE9 INC COM Call 91,000 -28.06 1,825 -40.41 n/a n/a n/a
2025-11-13 2025-09-30 13F FIVE9 COM Call 126,500 86.03 3,061 70.06 n/a n/a n/a
2025-08-13 2025-06-30 13F FIVE9 COM Call 68,000 1,801 n/a n/a n/a
2025-05-14 2025-03-31 13F FIVE9 COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2025-02-13 2024-12-31 13F FIVE9 COM Call 21,100 -52.69 858 -33.10 n/a n/a n/a
2024-11-13 2024-09-30 13F FIVE9 COM Call 44,600 73.54 1,281 13.06 n/a n/a n/a
2024-08-13 2024-06-30 13F FIVE9 COM Call 25,700 1,133 n/a n/a n/a
2024-05-15 2024-03-31 13F FIVE9 COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2024-02-14 2023-12-31 13F FIVE9 COM Call 25,700 -9.51 2,022 10.73 n/a n/a n/a
2023-11-14 2023-09-30 13F FIVE9 COM Call 28,400 9.23 1,826 -14.79 n/a n/a n/a
2023-08-14 2023-06-30 13F FIVE9 COM Call 26,000 2,144 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 FIVE9 INC COM FIVE9 INC COM Put 32,300 -58.00 490 -68.27 n/a n/a n/a
2026-02-17 2025-12-31 13F FIVE9 INC COM FIVE9 INC COM Put 76,900 -39.21 1,542 -49.66 n/a n/a n/a
2025-11-13 2025-09-30 13F FIVE9 COM Put 126,500 54.08 3,061 40.80 n/a n/a n/a
2025-08-13 2025-06-30 13F FIVE9 COM Put 82,100 2,174 n/a n/a n/a
2025-05-14 2025-03-31 13F FIVE9 COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2025-02-13 2024-12-31 13F FIVE9 COM Put 16,500 57.14 671 122.59 n/a n/a n/a
2024-11-13 2024-09-30 13F FIVE9 COM Put 10,500 -4.55 302 -37.94 n/a n/a n/a
2024-08-13 2024-06-30 13F FIVE9 COM Put 11,000 485 n/a n/a n/a
2024-05-15 2024-03-31 13F FIVE9 COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2024-02-14 2023-12-31 13F FIVE9 COM Put 24,400 -6.87 1,920 14.01 n/a n/a n/a
2023-11-14 2023-09-30 13F FIVE9 COM Put 26,200 -16.56 1,685 -34.93 n/a n/a n/a
2023-08-14 2023-06-30 13F FIVE9 COM Put 31,400 2,589 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.