Five9, Inc.
MX ˙ BMV ˙ US3383071012
SecurityMX:FIVN / Five9, Inc.
InstitutionXTX Topco Ltd
Latest Disclosed Ownership117,407 shares
Latest Disclosed Value $ 1,781,064
XTX Topco Ltd reports 107.62% increase in ownership of FIVN / Five9, Inc.

On May 15, 2026 - XTX Topco Ltd filed a 13F-HR form disclosing ownership of 117,407 shares of Five9, Inc. (MX:FIVN) valued at $1,781,064 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 56,549 shares of Five9, Inc.. This represents a change in shares of 107.62% during the quarter.

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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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 FIVE9 COM 338307101 117,407 60,858 107.62 1,781 57.19 0.0310
2026-02-17 2025-12-31 13F FIVE9 COM 338307101 56,549 6,662 13.35 1,134 -6.13 0.0298
2025-11-14 2025-09-30 13F FIVE9 COM 338307101 49,887 49,887 1,207 0.0626
2025-02-13 2024-12-31 13F FIVE9 COM 338307101 0 -21,883 -100.00 0 -100.00
2024-11-14 2024-09-30 13F FIVE9 COM 338307101 21,883 21,883 629 0.0455
2024-08-12 2024-06-30 13F FIVE9 COM 338307101 0 -5,889 -100.00 0 -100.00
2024-05-13 2024-03-31 13F FIVE9 COM 338307101 5,889 3,338 130.85 366 82.50 0.0493
2024-02-13 2023-12-31 13F FIVE9 COM 338307101 2,551 2,551 201 0.0440
2023-08-14 2023-06-30 13F FIVE9 COM 338307101 0 -6,153 -100.00 0 -100.00
2023-05-12 2023-03-31 13F FIVE9 COM 338307101 6,153 6,153 445 0.0932
2023-02-14 2022-12-31 13F FIVE9 COM 338307101 0 -3,096 -100.00 0 -100.00
2022-11-14 2022-09-30 13F FIVE9 COM 338307101 3,096 3,096 232 0.0574
2022-08-15 2022-06-30 13F FIVE9 COM 338307101 0 -4,026 -100.00 0 -100.00
2022-05-13 2022-03-31 13F FIVE9 COM 338307101 4,026 1,521 60.72 444 29.07 0.1947
2022-02-11 2021-12-31 13F FIVE9 COM 338307101 2,505 2,505 344 0.1946
2021-11-12 2021-09-30 13F FIVE9 COM 338307101 0 -1,471 -100.00 0 -100.00
2021-08-12 2021-06-30 13F FIVE9 COM 338307101 1,471 -884 -37.54 270 -26.63 0.0910
2021-05-14 2021-03-31 13F FIVE9 COM 338307101 2,355 2,355 368 0.1788
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.