Datadog, Inc.
MX ˙ BMV ˙ US23804L1035
SecurityMX:DDOG / Datadog, Inc.
InstitutionClearbridge Investments, LLC
Latest Disclosed Ownership1,567,724 shares
Latest Disclosed Value $ 185,069,876
Clearbridge Investments, LLC reports 17.24% increase in ownership of DDOG / Datadog, Inc.

On May 13, 2026 - Clearbridge Investments, LLC filed a 13F-HR form disclosing ownership of 1,567,724 shares of Datadog, Inc. (MX:DDOG) valued at $185,069,876 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 1,337,187 shares of Datadog, Inc.. This represents a change in shares of 17.24% 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)
2026-05-13 2026-03-31 13F Datadog CL A COM 23804L103 1,567,724 230,537 17.24 185,070 1.77 0.1611
2026-02-11 2025-12-31 13F Datadog CL A COM 23804L103 1,337,187 -145,420 -9.81 181,844 -13.87 0.1456
2025-11-13 2025-09-30 13F Datadog CL A COM 23804L103 1,482,607 1,341,884 953.56 211,123 1,016.88 0.1590
2025-08-12 2025-06-30 13F Datadog CL A COM 23804L103 140,723 -3,787 -2.62 18,903 31.86 0.0153
2025-05-13 2025-03-31 13F Datadog CL A COM 23804L103 144,510 -40,871 -22.05 14,337 -45.88 0.0125
2025-02-12 2024-12-31 13F Datadog CL A COM 23804L103 185,381 -107,454 -36.69 26,489 -21.38 0.0215
2024-11-12 2024-09-30 13F Datadog CL A COM 23804L103 292,835 33,728 13.02 33,694 0.27 0.0265
2024-08-27 2024-06-30 13F/A-1 Datadog CL A COM 23804L103 259,107 12,785 5.19 33,604 10.37 0.0273
2024-08-14 2024-06-30 13F Datadog CL A COM 23804L103 259,107 12,785 33,604 0.0275
2024-05-13 2024-03-31 13F Datadog CL A COM 23804L103 246,322 119 0.05 30,445 1.88 0.0241
2024-02-09 2023-12-31 13F Datadog CL A COM 23804L103 246,203 32,134 15.01 29,884 53.26 0.0257
2023-11-13 2023-09-30 13F Datadog CL A COM 23804L103 214,069 77,910 57.22 19,500 45.57 0.0188
2023-08-11 2023-06-30 13F Datadog CL A COM 23804L103 136,159 32,328 31.14 13,395 77.56 0.0121
2023-05-12 2023-03-31 13F Datadog CL A COM 23804L103 103,831 -3 -0.00 7,544 -1.14 0.0072
2023-02-10 2022-12-31 13F Datadog CL A COM 23804L103 103,834 -112,430 -51.99 7,632 -60.26 0.0075
2022-11-14 2022-09-30 13F Datadog CL A COM 23804L103 216,264 -46,212 -17.61 19,200 -23.19 0.0194
2022-08-11 2022-06-30 13F Datadog CL A COM 23804L103 262,476 29,847 12.83 24,998 -29.06 0.0233
2022-05-13 2022-03-31 13F Datadog CL A COM 23804L103 232,629 5,016 2.20 35,236 -13.08 0.0265
2022-02-11 2021-12-31 13F Datadog CL A COM 23804L103 227,613 32,723 16.79 40,540 47.16 0.0276
2021-11-12 2021-09-30 13F Datadog CL A COM 23804L103 194,890 20,646 11.85 27,548 51.91 0.0196
2021-08-13 2021-06-30 13F Datadog CL A COM 23804L103 174,244 -1,270 -0.72 18,135 23.98 0.0126
2021-05-13 2021-03-31 13F Datadog CL A COM 23804L103 175,514 1,421 0.82 14,627 -14.65 0.0109
2021-02-10 2020-12-31 13F Datadog CL A COM 23804L103 174,093 1,438 0.83 17,138 -2.83 0.0132
2020-11-12 2020-09-30 13F Datadog CL A COM 23804L103 172,655 -10,489 -5.73 17,638 10.76 0.0152
2020-08-14 2020-06-30 13F DATADOG CL A COM 23804L103 183,144 -330,839 -64.37 15,924 -13.89 0.0144
2020-05-22 2020-03-31 13F/A-1 DATADOG CL A COM 23804L103 513,983 187,953 57.65 18,493 54.56 0.0200
2020-05-15 2020-03-31 13F DATADOG CL A COM 23804L103 513,983 187,953 18,493 20,046.9308
2020-02-14 2019-12-31 13F DATADOG CL A COM 23804L103 326,030 4,750 1.48 11,965 9.82 0.0099
2019-11-14 2019-09-30 13F DATADOG CL A COM 23804L103 321,280 321,280 10,895 0.0095
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.