더 트레이드 데스크, Inc.
MX ˙ BMV ˙ US88339J1051
SecurityMX:TTD / The Trade Desk, Inc.
InstitutionBlair William & Co/il
Latest Disclosed Ownership20,020 shares
Latest Disclosed Value $ 454,254
Blair William & Co/il reports 25.02% decrease in ownership of TTD / The Trade Desk, Inc.

On May 8, 2026 - Blair William & Co/il filed a 13F-HR form disclosing ownership of 20,020 shares of The Trade Desk, Inc. (MX:TTD) valued at $454,254 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 26,700 shares of The Trade Desk, Inc.. This represents a change in shares of -25.02% 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)
2026-05-08 2026-03-31 13F THE TRADE DESK COM CL A 88339J105 20,020 -6,680 -25.02 454 -55.18 0.0013
2026-02-17 2025-12-31 13F THE TRADE DESK COM CL A 88339J105 26,700 -21,554 -44.67 1,014 -57.15 0.0027
2025-11-12 2025-09-30 13F THE TRADE DESK COM CL A 88339J105 48,254 15,720 48.32 2,365 0.94 0.0063
2025-07-24 2025-06-30 13F THE TRADE DESK COM CL A 88339J105 32,534 -2,169 -6.25 2,342 23.39 0.0065
2025-05-09 2025-03-31 13F THE TRADE DESK COM CL A 88339J105 34,703 21,779 168.52 1,899 25.03 0.0057
2025-02-12 2024-12-31 13F THE TRADE DESK COM CL A 88339J105 12,924 4,448 52.48 1,519 63.40 0.0044
2024-11-12 2024-09-30 13F THE TRADE DESK COM CL A 88339J105 8,476 -5,222 -38.12 929 -30.52 0.0027
2024-08-12 2024-06-30 13F THE TRADE DESK COM CL A 88339J105 13,698 -1,827 -11.77 1,338 -1.47 0.0041
2024-05-09 2024-03-31 13F THE TRADE DESK COM CL A 88339J105 15,525 5,893 61.18 1,357 95.82 0.0043
2024-02-12 2023-12-31 13F THE TRADE DESK COM CL A 88339J105 9,632 -1,400 -12.69 693 -19.61 0.0024
2023-11-09 2023-09-30 13F THE TRADE DESK COM CL A 88339J105 11,032 2,399 27.79 862 29.43 0.0033
2023-08-11 2023-06-30 13F THE TRADE DESK COM CL A 88339J105 8,633 812 10.38 667 39.92 0.0024
2023-05-12 2023-03-31 13F THE TRADE DESK COM CL A 88339J105 7,821 41 0.53 476 36.78 0.0019
2023-02-10 2022-12-31 13F THE TRADE DESK COM CL A 88339J105 7,780 -1,789 -18.70 349 -39.16 0.0015
2022-11-09 2022-09-30 13F THE TRADE DESK COM CL A 88339J105 9,569 -1,389 -12.68 572 24.62 0.0026
2022-08-10 2022-06-30 13F THE TRADE DESK COM CL A 88339J105 10,958 -2,431 -18.16 459 -50.49 0.0020
2022-05-13 2022-03-31 13F THE TRADE DESK COM CL A 88339J105 13,389 -2,237 -14.32 927 -35.27 0.0032
2022-02-14 2021-12-31 13F THE TRADE DESK COM CL A 88339J105 15,626 -1,804 -10.35 1,432 16.90 0.0045
2021-11-12 2021-09-30 13F THE TRADE DESK COM CL A 88339J105 17,430 4,375 33.51 1,225 21.29 0.0042
2021-08-12 2021-06-30 13F THE TRADE DESK COM CL A 88339J105 13,055 11,815 952.82 1,010 25.00 0.0035
2021-05-13 2021-03-31 13F THE TRADE DESK COM CL A 88339J105 1,240 -1,137 -47.83 808 -57.56 0.0030
2021-02-09 2020-12-31 13F THE TRADE DESK COM CL A 88339J105 2,377 418 21.34 1,904 87.40 0.0070
2020-11-06 2020-09-30 13F THE TRADE DESK COM CL A 88339J105 1,959 -627 -24.25 1,016 -3.33 0.0043
2020-08-12 2020-06-30 13F THE TRADE DESK COM CL A 88339J105 2,586 -251 -8.85 1,051 91.79 0.0050
2020-05-11 2020-03-31 13F THE TRADE DESK COM CL A 88339J105 2,837 749 35.87 548 1.11 0.0034
2020-02-13 2019-12-31 13F THE TRADE DESK COM CL A 88339J105 2,088 568 37.37 542 90.18 0.0028
2019-11-12 2019-09-30 13F THE TRADE DESK COM CL A 88339J105 1,520 420 38.18 285 13.55 0.0016
2019-08-13 2019-06-30 13F THE TRADE DESK COM CL A 88339J105 1,100 1,100 251 0.0014
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.