Which industries gave the most to Trump’s 2024–2026 fundraising efforts according to OpenSecrets?

Checked on January 24, 2026
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Executive summary

OpenSecrets’ reporting on the 2024 cycle shows that Trump’s fundraising was dominated not just by small-dollar grassroots donors but by an extraordinary concentration of very large gifts from a handful of ultra-wealthy individuals — and those individuals come from a narrow set of industries, most prominently technology, finance/hedge funds, rail/industrial fortunes and casino/gambling philanthropy (OpenSecrets’ contributor pages and analyses) [1] [2] [3]. The OpenSecrets database groups donations by contributor and by industry; the individual top givers clearly indicate which sectors supplied the biggest sums even where the supplied snippets do not reproduce OpenSecrets’ full industry-totals table [1] [4] [5].

1. Why industry attribution matters: how OpenSecrets groups money

OpenSecrets attributes political giving to industries by mapping donors’ employers, PACs and the sources of funds to sector categories and then totals those amounts so researchers can see which sectors back which candidates; the site’s candidate pages and “industry totals” sections are the primary source for those breakdowns [1] [5]. That methodological approach means that, for Trump’s 2024 cycle, large individual donors tied to particular sectors — when they give at scale to super PACs or committees aligned with him — translate into outsized industry totals on the OpenSecrets rollup [1] [6].

2. Tech stands out — Elon Musk’s outsized role

OpenSecrets’ own coverage and its breakdown of top donors name Elon Musk as the single largest political donor in the 2024 cycle, giving more than $291 million to Republican candidates, PACs and outside groups — a flow of money that places the technology sector prominently in the list of top contributors to pro‑Trump efforts [2] [7]. Musk’s donations, which OpenSecrets documents, were routed through a mix of direct contributions and large gifts to super PACs and outside spending groups that supported Trump-aligned campaigns [2].

3. Finance and hedge funds: big checks and big names

OpenSecrets and related reporting list other mega-donors whose fortunes lie in finance, hedge funds and asset management, and those gifts appear among the largest sources supporting Trump’s outside spending ecosystem; Ken Griffin is publicly documented as a major donor at the high end of the 2024 donor list [3]. OpenSecrets’ top-donor reporting shows that megadonors from finance and investment backgrounds rank among the handful of contributors who each gave tens or hundreds of millions, meaning finance/hedge-fund–linked contributions are a central component of the campaign’s industry profile [1] [3].

4. Old money and industrial fortunes — rail, heirs, and family dynasties

OpenSecrets and contemporary reporting identify Timothy Mellon and other heirs as among the largest donors in the 2024 cycle, tying substantial sums to rail and industrial fortunes; Mellon is described as a railroad magnate and a prolific political donor, with hundreds of millions given overall in recent cycles [3] [8]. When family fortunes or industrial magnates give at that scale to pro‑Trump super PACs, they push the “rail/industrial/legacy wealth” categories high in OpenSecrets’ industry tallies [3] [8].

5. Gambling and related philanthropy — the Adelson presence

OpenSecrets’ summaries and reporting cited by other outlets note Miriam Adelson (linked to casino and gambling wealth) as a major donor in the 2024 cycle, placing casino/gambling-linked philanthropy among the sectors that delivered large sums supporting Trump-aligned outside spending [3]. OpenSecrets tracks such donations whether they flow through individual checks, family foundations or super PACs, and the Adelson gifts figure prominently in the list of high-dollar supporters [3].

6. Limits in the provided excerpts and how to verify

The OpenSecrets candidate and industry pages referenced here provide the underlying data and specific “industry totals” tables, but the snippets supplied do not reproduce the complete ranked industry totals for Trump’s 2024–2026 fundraising [1] [4] [5]. The clearest, attributable evidence in the supplied reporting is the identity and dollar scale of the largest individual donors — Musk (tech), Mellon (rail/industrial heir), Griffin (finance), and Miriam Adelson (casino/gambling philanthropy) — from which the dominant industry contributors can be inferred; readers seeking the exact ranked list and dollar totals should consult OpenSecrets’ industry-totals page for Trump’s cycle [1] [2] [3].

7. Bottom line

According to OpenSecrets’ donor and top‑donor reporting, Trump’s 2024 fundraising was heavily weighted toward a small set of industries tied to the biggest individual givers — most prominently technology (Elon Musk), finance/hedge funds (major investors like Ken Griffin), rail/industrial heirs (Timothy Mellon), and casino/gambling philanthropy (Miriam Adelson) — and those individual flows are what make those sectors the leading industry sources on OpenSecrets’ rollup of contributions [2] [3] [1]. For the precise ordered industry totals and dollar figures, OpenSecrets’ “Industry Totals” table on the Trump candidate page provides the definitive breakdown [1] [5].

Want to dive deeper?
What are the exact industry totals for Donald Trump on OpenSecrets’ 'Industry Totals' table for the 2024 cycle?
How much did Elon Musk, Ken Griffin, Timothy Mellon and Miriam Adelson each give to pro‑Trump super PACs according to OpenSecrets?
How does OpenSecrets classify donations from super PACs and dark‑money groups when calculating industry totals?