Datadog, Inc.
MX ˙ BMV ˙ US23804L1035
SecurityMX:DDOG / Datadog, Inc.
InstitutionBamco Inc /ny/
Latest Disclosed Ownership587,382 shares
Latest Disclosed Value $ 69,340,445
Bamco Inc /ny/ reports 19.73% increase in ownership of DDOG / Datadog, Inc.

On May 15, 2026 - Bamco Inc /ny/ filed a 13F-HR form disclosing ownership of 587,382 shares of Datadog, Inc. (MX:DDOG) valued at $69,340,445 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 490,582 shares of Datadog, Inc.. This represents a change in shares of 19.73% 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 DATADOG CL A COM 23804L103 587,382 96,800 19.73 69,340 3.94 0.2093
2026-02-17 2025-12-31 13F DATADOG CL A COM 23804L103 490,582 -48,861 -9.06 66,714 -13.15 0.1807
2025-11-14 2025-09-30 13F DATADOG CL A COM 23804L103 539,443 -78,790 -12.74 76,817 -7.50 0.2037
2025-08-14 2025-06-30 13F DATADOG CL A COM 23804L103 618,233 39,469 6.82 83,047 44.63 0.2251
2025-05-15 2025-03-31 13F DATADOG CL A COM 23804L103 578,764 47,910 9.03 57,419 -24.30 0.1687
2025-02-14 2024-12-31 13F DATADOG CL A COM 23804L103 530,854 -25,233 -4.54 75,854 18.55 0.1961
2024-11-14 2024-09-30 13F DATADOG CL A COM 23804L103 556,087 -15,032 -2.63 63,983 -13.62 0.1697
2024-08-14 2024-06-30 13F DATADOG CL A COM 23804L103 571,119 32,593 6.05 74,068 11.28 0.2121
2024-05-15 2024-03-31 13F DATADOG CL A COM 23804L103 538,526 19,182 3.69 66,562 5.59 0.1774
2024-02-14 2023-12-31 13F DATADOG CL A COM 23804L103 519,344 -53,591 -9.35 63,038 20.79 0.1679
2023-11-14 2023-09-30 13F DATADOG CL A COM 23804L103 572,935 -104,233 -15.39 52,189 -21.66 0.1516
2023-08-14 2023-06-30 13F DATADOG CL A COM 23804L103 677,168 -105,016 -13.43 66,620 17.22 0.1845
2023-05-15 2023-03-31 13F DATADOG CL A COM 23804L103 782,184 6,040 0.78 56,833 -0.37 0.1706
2023-02-14 2022-12-31 13F DATADOG CL A COM 23804L103 776,144 41,186 5.60 57,047 -12.57 0.1916
2022-11-14 2022-09-30 13F DATADOG CL A COM 23804L103 734,958 121,745 19.85 65,250 11.73 0.2108
2022-08-15 2022-06-30 13F DATADOG CL A COM 23804L103 613,213 89,205 17.02 58,402 -26.42 0.1876
2022-05-13 2022-03-31 13F DATADOG CL A COM 23804L103 524,008 172,278 48.98 79,371 26.70 0.1948
2022-02-14 2021-12-31 13F DATADOG CL A COM 23804L103 351,730 28,786 8.91 62,647 37.24 0.1329
2021-11-12 2021-09-30 13F DATADOG CL A COM 23804L103 322,944 720 0.22 45,648 36.11 0.1034
2021-08-13 2021-06-30 13F DATADOG CL A COM 23804L103 322,224 32,911 11.38 33,537 39.09 0.0768
2021-05-19 2021-03-31 13F DATADOG CL A COM 23804L103 289,313 -47,617 -14.13 24,111 -27.30 0.0594
2021-02-12 2020-12-31 13F DATADOG CL A COM 23804L103 336,930 29,667 9.66 33,167 5.66 0.0821
2020-11-13 2020-09-30 13F DATADOG CL A COM 23804L103 307,263 -84,586 -21.59 31,390 -7.87 0.0963
2020-08-14 2020-06-30 13F DATADOG CL A COM 23804L103 391,849 -12,557 -3.11 34,071 134.15 0.1232
2020-05-15 2020-03-31 13F DATADOG CL A COM 23804L103 404,406 -33,188 -7.58 14,551 -11.98 0.0713
2020-02-18 2019-12-31 13F DATADOG CL A COM 23804L103 437,594 -62,406 -12.48 16,532 -2.49 0.0631
2019-11-14 2019-09-30 13F DATADOG CL A COM 23804L103 500,000 500,000 16,955 0.0697
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.