Datadog, Inc.
MX ˙ BMV ˙ US23804L1035
SecurityMX:DDOG / Datadog, Inc.
InstitutionRobeco Institutional Asset Management B.V.
Latest Disclosed Ownership77,227 shares
Latest Disclosed Value $ 9,116,647
Robeco Institutional Asset Management B.V. reports 24.55% decrease in ownership of DDOG / Datadog, Inc.

On April 21, 2026 - Robeco Institutional Asset Management B.V. filed a 13F-HR form disclosing ownership of 77,227 shares of Datadog, Inc. (MX:DDOG) valued at $9,116,647 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 102,351 shares of Datadog, Inc.. This represents a change in shares of -24.55% 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)
2026-04-21 2026-03-31 13F DATADOG CL A COM 23804L103 77,227 -25,124 -24.55 9,117 -34.50 0.0130
2026-01-23 2025-12-31 13F DATADOG CL A COM 23804L103 102,351 12,229 13.57 13,919 8.45 0.0198
2025-10-22 2025-09-30 13F DATADOG CL A COM 23804L103 90,122 -11,899 -11.66 12,833 -6.36 0.0186
2025-07-18 2025-06-30 13F DATADOG CL A COM 23804L103 102,021 -175,726 -63.27 13,704 -50.27 0.0222
2025-04-23 2025-03-31 13F DATADOG CL A COM 23804L103 277,747 -165,502 -37.34 27,555 -56.49 0.0535
2025-01-23 2024-12-31 13F DATADOG CL A COM 23804L103 443,249 -165,003 -27.13 63,336 -9.50 0.1201
2024-10-29 2024-09-30 13F DATADOG CL A COM 23804L103 608,252 206,696 51.47 69,985 34.39 0.1390
2024-07-23 2024-06-30 13F DATADOG CL A COM 23804L103 401,556 226,938 129.96 52,078 141.30 0.1121
2024-04-24 2024-03-31 13F DATADOG CL A COM 23804L103 174,618 -58,341 -25.04 21,583 -23.67 0.0469
2024-02-14 2023-12-31 13F/A-1 DATADOG CL A COM 23804L103 232,959 84,509 56.93 28,277 109.11 0.0686
2024-02-08 2023-12-31 13F DATADOG CL A COM 23804L103 124,240 -24,210 233 0.0436
2023-10-24 2023-09-30 13F DATADOG CL A COM 23804L103 148,450 108,418 270.83 13,522 243.37 0.0361
2023-07-24 2023-06-30 13F DATADOG CL A COM 23804L103 40,032 -15,949 -28.49 3,938 -3.17 0.0103
2023-05-04 2023-03-31 13F DATADOG CL A COM 23804L103 55,981 -44,155 -44.10 4,068 -44.74 0.0111
2023-02-07 2022-12-31 13F DATADOG CL A COM 23804L103 100,136 24,569 32.51 7,360 9.70 0.0212
2022-12-01 2022-09-30 13F/A-1 DATADOG CL A COM 23804L103 75,567 -7,883 -9.45 6,709 -15.59 0.0217
2022-10-27 2022-09-30 13F DATADOG CL A COM 23804L103 75,567 -7,883 6,709 0.0214
2022-12-01 2022-06-30 13F/A-1 DATADOG CL A COM 23804L103 83,450 15,945 23.62 7,948 -22.28 0.0247
2022-07-27 2022-06-30 13F DATADOG CL A COM 23804L103 83,450 15,945 7,948 0.0243
2022-12-01 2022-03-31 13F/A-1 DATADOG CL A COM 23804L103 67,505 11,888 21.37 10,226 3.22 0.0241
2022-04-26 2022-03-31 13F DATADOG CL A COM 23804L103 67,505 11,888 10,226 0.0238
2022-12-01 2021-12-31 13F/A-1 DATADOG CL A COM 23804L103 55,617 12,352 28.55 9,907 61.96 0.0211
2022-01-31 2021-12-31 13F DATADOG CL A COM 23804L103 55,617 12,352 9,907 0.0208
2022-12-01 2021-09-30 13F/A-1 DATADOG CL A COM 23804L103 43,265 23,234 115.99 6,117 193.38 0.0136
2021-10-20 2021-09-30 13F DATADOG CL A COM 23804L103 43,265 23,234 6,117 0.0134
2022-12-01 2021-06-30 13F/A-1 DATADOG CL A COM 23804L103 20,031 -10,341 -34.05 2,085 -17.65 0.0046
2021-07-28 2021-06-30 13F DATADOG CL A COM 23804L103 20,031 -10,341 2,085 0.0046
2022-12-01 2021-03-31 13F/A-1 DATADOG CL A COM 23804L103 30,372 1,160 3.97 2,532 -11.93 0.0062
2021-04-23 2021-03-31 13F DATADOG CL A COM 23804L103 30,372 1,160 2,532 0.0062
2022-12-01 2020-12-31 13F/A-1 DATADOG CL A COM 23804L103 29,212 11,326 63.32 2,875 57.36 0.0076
2021-01-28 2020-12-31 13F DATADOG CL A COM 23804L103 29,212 11,326 2,875 0.0075
2021-01-19 2020-09-30 13F/A-1 DATADOG CL A COM 23804L103 17,886 13,005 266.44 1,827 330.90 0.0056
2020-10-29 2020-09-30 13F DATADOG CL A COM 23804L103 17,886 13,005 1,827 5,642.3706
2021-01-19 2020-06-30 13F/A-1 DATADOG CL A COM 23804L103 4,881 4,881 424 0.0014
2020-07-20 2020-06-30 13F DATADOG CL A COM 23804L103 4,881 424
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.