더 트레이드 데스크, Inc.
MX ˙ BMV ˙ US88339J1051
SecurityMX:TTD / The Trade Desk, Inc.
InstitutionRathbone Brothers plc
Latest Disclosed Ownership19,397 shares
Latest Disclosed Value $ 440,117
Rathbone Brothers plc reports 52.86% decrease in ownership of TTD / The Trade Desk, Inc.

On May 12, 2026 - Rathbone Brothers plc filed a 13F-HR form disclosing ownership of 19,397 shares of The Trade Desk, Inc. (MX:TTD) valued at $440,117 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on February 6, 2026 disclosing 41,148 shares of The Trade Desk, Inc.. This represents a change in shares of -52.86% 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)
2026-05-12 2026-03-31 13F THE TRADE DESK INC USD0.000001 Cls A COM 88339J105 19,397 -21,751 -52.86 440 -71.81 0.0019
2026-02-06 2025-12-31 13F/A-1 THE TRADE DESK INC USD0.000001 Cls A COM 88339J105 41,148 3,269 8.63 1,562 -15.89 0.0062
2026-01-21 2025-12-31 13F THE TRADE DESK INC USD0.000001 Cls A COM 88339J105 41,148 3,269 1,562 0.0062
2025-11-13 2025-09-30 13F THE TRADE DESK INC USD0.000001 Cls A COM 88339J105 37,879 15,045 65.89 1,856 12.96 0.0075
2025-08-07 2025-06-30 13F THE TRADE DESK INC USD0.000001 Cls A COM 88339J105 22,834 2,296 11.18 1,644 46.30 0.0071
2025-05-13 2025-03-31 13F THE TRADE DESK INC USD0.000001 Cls A COM 88339J105 20,538 15,307 292.62 1,124 82.90 0.0054
2025-02-13 2024-12-31 13F THE TRADE DESK INC USD0.000001 Cls A COM 88339J105 5,231 18 0.35 615 7.53 0.0030
2024-11-13 2024-09-30 13F THE TRADE DESK INC USD0.000001 Cls A COM 88339J105 5,213 -806 -13.39 572 -2.73 0.0029
2024-08-09 2024-06-30 13F THE TRADE DESK INC USD0.000001 Cls A COM 88339J105 6,019 60 1.01 588 12.88 0.0032
2024-05-14 2024-03-31 13F THE TRADE DESK INC USD0.000001 Cls A COM 88339J105 5,959 -700 -10.51 521 8.56 0.0030
2024-02-13 2023-12-31 13F THE TRADE DESK INC USD0.000001 Cls A COM 88339J105 6,659 -329 -4.71 479 -12.27 0.0031
2023-11-13 2023-09-30 13F THE TRADE DESK INC USD0.000001 Cls A COM 88339J105 6,988 1,401 25.08 546 26.68 0.0040
2023-08-04 2023-06-30 13F THE TRADE DESK INC USD0.000001 Cls A COM 88339J105 5,587 -95 -1.67 431 24.57 0.0040
2023-05-12 2023-03-31 13F THE TRADE DESK INC USD0.000001 Cls A COM 88339J105 5,682 -360 -5.96 346 28.15 0.0035
2023-02-14 2022-12-31 13F THE TRADE DESK INC USD0.000001 Cls A COM 88339J105 6,042 -183 -2.94 271 -27.42 0.0030
2022-11-14 2022-09-30 13F/A-1 THE TRADE DESK INC USD0.000001 Cls A COM 88339J105 6,225 -255 -3.94 372 37.27 0.0046
2022-11-03 2022-09-30 13F THE TRADE DESK INC USD0.000001 Cls A COM 88339J105 6,225 -255 372 0.0046
2022-08-12 2022-06-30 13F THE TRADE DESK INC USD0.000001 Cls A COM 88339J105 6,480 -200 -2.99 271 -41.47 0.0031
2022-05-11 2022-03-31 13F THE TRADE DESK INC USD0.000001 Cls A COM 88339J105 6,680 -135 -1.98 463 -25.92 0.0047
2022-02-10 2021-12-31 13F THE TRADE DESK INC USD0.000001 Cls A COM 88339J105 6,815 -165 -2.36 625 27.29 0.0061
2021-11-04 2021-09-30 13F THE TRADE DESK INC USD0.000001 Cls A COM 88339J105 6,980 -200 -2.79 491 -11.53 0.0053
2021-07-30 2021-06-30 13F THE TRADE DESK INC USD0.000001 Cls A COM 88339J105 7,180 6,427 853.52 555 13.03 0.0062
2021-05-14 2021-03-31 13F THE TRADE DESK INC USD0.000001 Cls A COM 88339J105 753 69 10.09 491 -10.40 0.0063
2021-02-11 2020-12-31 13F THE TRADE DESK INC USD0.000001 Cls A COM 88339J105 684 -174 -20.28 548 23.15 0.0078
2020-11-13 2020-09-30 13F THE TRADE DESK INC USD0.000001 Cls A COM 88339J105 858 -38 -4.24 445 22.25 0.0076
2020-08-07 2020-06-30 13F THE TRADE DESK INC USD0.000001 Cls A COM 88339J105 896 896 364 0.0074
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.