Five9, Inc.
MX ˙ BMV ˙ US3383071012
SecurityMX:FIVN / Five9, Inc.
InstitutionEngineers Gate Manager LP
Latest Disclosed Ownership357,253 shares
Latest Disclosed Value $ 5,419,528
Engineers Gate Manager LP reports 155.62% increase in ownership of FIVN / Five9, Inc.

On May 15, 2026 - Engineers Gate Manager LP filed a 13F-HR form disclosing ownership of 357,253 shares of Five9, Inc. (MX:FIVN) valued at $5,419,528 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 139,761 shares of Five9, Inc.. This represents a change in shares of 155.62% 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 357,253 217,492 155.62 5,420 93.40 0.0677
2026-02-17 2025-12-31 13F FIVE9 COM 338307101 139,761 57,632 70.17 2,802 41.02 0.0332
2025-11-14 2025-09-30 13F FIVE9 COM 338307101 82,129 -117,273 -58.81 1,988 -62.37 0.0228
2025-08-14 2025-06-30 13F FIVE9 COM 338307101 199,402 58,686 41.71 5,280 38.22 0.0657
2025-05-15 2025-03-31 13F FIVE9 COM 338307101 140,716 118,728 539.97 3,820 327.77 0.0644
2025-02-14 2024-12-31 13F FIVE9 COM 338307101 21,988 -161,322 -88.01 894 -83.04 0.0156
2024-11-14 2024-09-30 13F FIVE9 COM 338307101 183,310 165,613 935.83 5,266 575.13 0.1028
2024-08-14 2024-06-30 13F FIVE9 COM 338307101 17,697 -662 -3.61 780 -31.58 0.0176
2024-05-15 2024-03-31 13F FIVE9 COM 338307101 18,359 -78,002 -80.95 1,140 -84.96 0.0300
2024-02-14 2023-12-31 13F FIVE9 COM 338307101 96,361 36,804 61.80 7,583 98.02 0.2165
2023-11-14 2023-09-30 13F FIVE9 COM 338307101 59,557 -7,254 -10.86 3,830 -30.48 0.1416
2023-08-14 2023-06-30 13F FIVE9 COM 338307101 66,811 14,482 27.67 5,509 45.64 0.2082
2023-05-15 2023-03-31 13F FIVE9 COM 338307101 52,329 52,329 3,783 0.1580
2023-02-14 2022-12-31 13F FIVE9 COM 338307101 0 -16,243 -100.00 0 -100.00
2022-11-14 2022-09-30 13F FIVE9 COM 338307101 16,243 13,942 605.91 1,218 480.00 0.0758
2022-08-15 2022-06-30 13F FIVE9 COM 338307101 2,301 2,301 210 0.0077
2022-02-14 2021-12-31 13F FIVE9 COM 338307101 0 -7,206 -100.00 0 -100.00
2021-11-15 2021-09-30 13F FIVE9 COM 338307101 7,206 7,206 1,151 0.0656
2021-08-16 2021-06-30 13F FIVE9 COM 338307101 0 -18,681 -100.00 0 -100.00
2021-05-17 2021-03-31 13F FIVE9 COM 338307101 18,681 16,245 666.87 2,920 587.06 0.1447
2021-02-16 2020-12-31 13F FIVE9 COM 338307101 2,436 -11,352 -82.33 425 -76.23 0.0184
2020-11-16 2020-09-30 13F FIVE9 COM 338307101 13,788 13,788 1,788 0.0839
2020-08-17 2020-06-30 13F FIVE9 COM 338307101 0 -6,910 -100.00 0 -100.00
2020-05-15 2020-03-31 13F FIVE9 COM 338307101 6,910 -9,611 -58.17 528 -51.25 0.0380
2020-02-14 2019-12-31 13F FIVE9 COM 338307101 16,521 -12,872 -43.79 1,083 -31.46 0.0476
2019-11-14 2019-09-30 13F FIVE9 COM 338307101 29,393 29,393 1,580 0.0802
2019-08-14 2019-06-30 13F FIVE9 COM 338307101 0 -6,300 -100.00 0 -100.00
2019-05-15 2019-03-31 13F FIVE9 COM 338307101 6,300 -45,624 -87.87 333 -85.33 0.0202
2019-02-14 2018-12-31 13F FIVE9 COM 338307101 51,924 -38,789 -42.76 2,270 -42.72 0.1817
2018-11-01 2018-09-30 13F FIVE9 COM 338307101 90,713 90,713 3,963 0.3045
2018-05-07 2018-03-31 13F FIVE9 COM 338307101 0 -36,596 -100.00 0 -100.00
2018-02-01 2017-12-31 13F FIVE9 COM 338307101 36,596 -17,370 -32.19 911 -29.38 0.0625
2017-11-13 2017-09-30 13F FIVE9 COM 338307101 53,966 -27,452 -33.72 1,290 -26.37 0.1085
2017-08-10 2017-06-30 13F FIVE9 COM 338307101 81,418 81,418 1,752 0.1579
2017-02-10 2016-12-31 13F FIVE9 COM 338307101 0 -38,268 -100.00 0 -100.00
2016-11-09 2016-09-30 13F FIVE9 COM 338307101 38,268 -31,983 -45.53 600 -28.23 0.0625
2016-08-11 2016-06-30 13F FIVE9 COM 338307101 70,251 70,251 836 0.0600
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.