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Official portrait of Mazie K. Hirono

Mazie K. Hirono

D Democrat · Senator, Hawaii
10
Low self-dealing
4/6 components have data
#165 of 193 scored

Senator Mazie Hirono (D-HI) presents a largely clean accountability profile. She holds no tracked individual-stock positions and has had no recorded congressional stock trades in recent years; her portfolio is held in mutual funds, retirement plans, and bank deposits, and she co-sponsors legislation (ETHICS Act) to ban member stock trading. Her estimated net worth (roughly $3.4M-$11.8M range, ~$7.4M midpoint in 2025) places her around the middle of the Senate; substantial portions appear tied to mutual-fund market gains rather than anomalous enrichment, and pre-office wealth is excluded. Standard industry donations (lawyers/law firms, labor, finance) correlate with her committee work but no specific quid pro quo is documented; her vote-attendance is excellent (~0.9% missed lifetime), and no campaign-fund personal-use or family-lobbying findings surfaced in public records.

Public record

In Congress since
2007
Committees
Armed Services
Energy and Natural Resources
Small Business and Entrepreneurship
Judiciary
Veterans' Affairs
Missed votes, 119th Congress
0.4% (4 of 915; median member 1.9%)
Campaign money, 2025–26 cycle
$563K raised · 7% from PACs & committees · $1.4M cash on hand FEC ↗

The stock-trading ban

Senate cloture on H.R. 7008, Sep 30, 2026
No
Cosponsored a ban bill
None

H.R. 7008 bans new stock purchases by members, spouses and dependents; it doesn't force sales of existing holdings. The Senate vote was on the version paired with the SAVE Act, which is why no Democrat voted yes. Full breakdown →

Disclosed stock trades

No periodic transaction reports on file since 2024. That's the norm: most members don't trade individual stocks, or hold them in blind trusts and diversified funds.

Amounts are the ranges members must report, not exact values. The STOCK Act requires a report within 45 days of a trade; "late" counts days past that deadline, measured to the filing date.

How the score breaks down

Stock self-trading
25% weight
5
No tracked individual-stock trades in recent years per Quiver/Capitol Trades; holdings are mutual funds, retirement plans, and bank deposits. She co-sponsors the ETHICS Act to ban member stock trading. Minimal direct-equity exposure means little STOCK Act conflict risk.
No tracked trade activity in last 3 years; ~$89.2K in trackable publicly traded assets.Data aggregatorquiverquant.com ↗Hirono co-sponsors ETHICS Act banning members/spouses/dependents from trading securities.Official recordmerkley.senate.gov ↗
Net-worth enrichment in office
15% weight
12
Net worth grew from ~$3.0M (2015) to ~$7.4M midpoint (2025 estimate), ranking ~131st in Congress. Wealth is concentrated in mutual funds (~$5.2M) consistent with market appreciation over a decade rather than salary-implausible jumps; disclosure ranges limit precision. Low concern for anomalous enrichment.
2025 estimated net worth ~$7.4M, mostly mutual funds ($5.2M), bank deposits ($991K), retirement ($750K).Data aggregatorquiverquant.com ↗2015 estimated net worth ~$2.99M per OpenSecrets.Reference databaseopensecrets.org ↗
Money → action alignmentcorrelation, not proof of any quid-pro-quo
20% weight
18
CORRELATION, NOT PROOF. Top career donor industries (lawyers/law firms, labor unions, finance) align with her Judiciary and Armed Services committee seats, typical for a Democratic senator. No documented vote-for-donation quid pro quo; she has supported super-PAC spending limits. Routine concentration, no specific impropriety found.
OpenSecrets tracks her top industry contributors and committee assignments (Judiciary, Armed Services, Energy).Reference databaseopensecrets.org ↗Hirono co-filed a brief challenging unlimited super-PAC spending, signaling campaign-finance reform stance.Official recordwhitehouse.senate.gov ↗
Campaign-fund personal useno data
15% weight
—
No public records, FEC findings, or reporting of personal use of campaign or leadership-PAC (Friends of Mazie Hirono) funds were identified. Absence is not penalized.
FEC committee overview for Friends of Mazie Hirono shows no flagged personal-use enforcement.Official recordfec.gov ↗
Revolving door & familyno data
15% weight
—
No documented family lobbying tied to her office. Husband Leighton Kim Oshima is an insurance-defense litigator in Honolulu, not a federal lobbyist. No staff-to-lobbyist pipeline reporting surfaced. Absence is not penalized.
Husband Leighton Kim Oshima works in private insurance-defense law in Honolulu; no lobbying ties reported.Reference databaseen.wikipedia.org ↗
Skips the job to fundraise
10% weight
3
Missed only 46 of 4,936 lifetime roll-call votes (0.9%), well below the 2.8% Senate median. No reports of heavy paid speaking displacing legislative duties. Strong attendance indicates job attentiveness.
Missed 0.9% of votes (46 of 4,936) since 2007, better than 2.8% Senate median.Reference databasegovtrack.us ↗

Sources behind this score: 2 data aggregator · 3 official record · 4 reference database. Score = weighted average of the components that have data; the 2 without sourced evidence are excluded, never counted against the member. Methodology →

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