The Trade Desk, Inc.
US ˙ NasdaqGM ˙ US88339J1051

SecurityTTD / The Trade Desk, Inc.
InstitutionSummit Trail Advisors, Llc
Latest Disclosed Ownership58,887 shares
Latest Disclosed Value $ 1,336,146
Summit Trail Advisors, Llc reports 280.63% increase in ownership of TTD / The Trade Desk, Inc.

On May 12, 2026 - Summit Trail Advisors, Llc filed a 13F-HR form disclosing ownership of 58,887 shares of The Trade Desk, Inc. (US:TTD) valued at $1,336,146 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 15,471 shares of The Trade Desk, Inc.. This represents a change in shares of 280.63% during the quarter. The current value of the position is $1,210,717 USD.

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 COM CL A 88339J105 58,887 43,416 280.63 1,336 127.60 0.0191
2026-02-17 2025-12-31 13F THE TRADE DESK COM CL A 88339J105 15,471 -5,666 -26.81 587 -43.29 0.0102
2025-11-14 2025-09-30 13F THE TRADE DESK COM CL A 88339J105 21,137 13,706 184.44 1,036 93.82 0.0143
2025-08-14 2025-06-30 13F THE TRADE DESK COM CL A 88339J105 7,431 3,675 97.84 535 160.49 0.0092
2025-04-28 2025-03-31 13F THE TRADE DESK COM CL A 88339J105 3,756 -902 -19.36 206 -62.52 0.0068
2025-01-29 2024-12-31 13F THE TRADE DESK COM CL A 88339J105 4,658 1,105 31.10 547 40.62 0.0202
2024-11-12 2024-09-30 13F THE TRADE DESK COM CL A 88339J105 3,553 3,553 390 0.0097
2021-02-16 2020-12-31 13F Trade Desk Inc Com CL A Equity 88339J105 0 -498 -100.00 0 -100.00
2020-11-16 2020-09-30 13F/A-1 Trade Desk Inc Com CL A Equity 88339J105 498 498 369 0.0714
2019-02-13 2018-12-31 13F THE TRADE DESK INC COM CL A EQUITY 88339J105 0 -3,113 -100.00 0 -100.00
2018-11-14 2018-09-30 13F THE TRADE DESK INC COM CL A EQUITY 88339J105 3,113 823 35.94 470 118.60 0.1037
2018-08-10 2018-06-30 13F Trade Desk Inc Com CL A EQUITY 88339J105 2,290 -7,675 -77.02 215 -46.91 0.0752
2018-05-22 2018-03-31 13F/A-1 THE TRADE DESK INC COM CL A EQUITY 88339J105 9,965 4,936 98.15 405 65.31 0.0687
2018-05-21 2018-03-31 13F THE TRADE DESK INC COM CL A EQUITY 88339J105 404,647 399,618 405
2018-02-14 2017-12-31 13F THE TRADE DESK INC COM CL A EQUITY 88339J105 5,029 5,029 245 0.0309
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.