How much voting power do Vanguard and BlackRock exercise at UnitedHealth Group?

Checked on December 21, 2025
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Executive summary

Vanguard and BlackRock together control roughly 16–19% of UnitedHealth Group through beneficial ownership stakes, with Vanguard holding about 9% and BlackRock roughly 7.8–8.2% depending on the data snapshot cited [1] [2] [3]. Those percentages represent large institutional shareholdings and corresponding voting influence, but they are not an outright controlling block and can fluctuate with fund flows, proxy filings and reporting dates [1] [3].

1. Vanguard is the single largest institutional shareholder — roughly 9%

Multiple shareholder summaries and UnitedHealth’s proxy-related reporting identify Vanguard as UnitedHealth’s largest institutional owner, at about 9.0–9.07% beneficial ownership, which the sources equate with roughly the same percentage of votes controlled by Vanguard funds as of the cited reports [2] [1]. That stake is expressed in millions of shares in public shareholder listings and is typical of Vanguard’s passive index and large-cap funds that amass significant positions in S&P 500 companies [2] [4].

2. BlackRock holds roughly 7.8–8.2% and is the second-largest institutional owner

Reporting and ownership trackers place BlackRock’s beneficial ownership of UnitedHealth in the high 7 percent to low 8 percent range — commonly reported as about 7.8% and, in some summaries, up to ~8.19% depending on timing and data source [1] [3]. That percentage reflects consolidated positions across BlackRock’s many funds and accounts and is consistent with repeated listings of BlackRock among UnitedHealth’s top shareholders [5] [3].

3. Combined stake and voting influence: a meaningful minority, not outright control

Taken together, Vanguard and BlackRock typically beneficially own around 16–19% of UnitedHealth’s outstanding shares, a sizable minority that gives them substantial collective voting power at annual meetings and on corporate governance questions but falls short of a majority that would constitute control [1] [3]. Analysts and critics often emphasize the normative influence of the “Big Three,” noting that combined holdings across many large firms create systemic influence even where no single shareholder holds a majority [1] [6].

4. “Voting power” in practice is nuanced — beneficial votes, pooled funds, and voting policies

Those percentage figures represent beneficial ownership and the votes asset managers cast on behalf of clients; they do not always translate to unified, active direction of corporate policy because BlackRock and Vanguard manage many separate funds with differing mandates and because both firms have documented “house” voting practices that seek consistency across funds [1] [7]. Moreover, both firms face pressure from politicians, clients and civil-society groups about how to exercise votes, and have discussed decentralizing voting within fund managers — a change that would alter how that percentage of shares translates into a single voting voice [7].

5. Data caveats: timing, proxies, and the difference between ownership and control

Public snapshots and third‑party ownership trackers use filings and fund disclosures that change quarterly; the 9.07%/7.8% figures come from proxy statements and shareholder summaries that the reporting itself acknowledges may fluctuate [1] [2]. Additionally, “beneficial ownership” reported by asset managers reflects custody of shares for clients and aggregated fund holdings rather than the managers’ proprietary stake, so while voting authority accompanies that ownership, it is legally distinct from direct corporate control by a single owner [1] [3].

6. Why the nuance matters: influence, accountability and policy debates

Because Vanguard and BlackRock are often the top two shareholders across many large firms, their combined 16–19% in UnitedHealth contributes to broader concerns about concentrated institutional voting power and systemic influence over corporate America — concerns cited in legislative initiatives and watchdog commentary — but the specific percentages here show influence that is substantial yet not unilateral control of UnitedHealth [1] [8] [6]. The sources make clear the numbers are significant enough to shape proxy outcomes and board races in aggregate, even as precise outcomes depend on how those votes are cast at each meeting [1] [7].

Want to dive deeper?
How have Vanguard and BlackRock voted on UnitedHealth executive compensation and board elections in the last three proxy seasons?
What are the legal differences between beneficial ownership and controlling interest for institutional investors?
How would proposed U.S. legislation to limit asset-manager voting power affect large institutional shareholders like Vanguard and BlackRock?