Company · MUC · CIK 1051004

Blackrock Muniholdings California Quality Fund, Inc. (MUC) SEC filings and CIK.

MUC’s SEC Central Index Key (CIK) is 0001051004, or 1051004 without leading zeros. The SEC’s ticker file lists it as BLACKROCK MUNIHOLDINGS CALIFORNIA QUALITY FUND, INC..

Ticker
MUC
CIK
0001051004
Other tickers
None
Insider transactions, Q3 2026
0

Insider trading

In Q3 2026, insiders at Blackrock Muniholdings California Quality Fund, Inc. reported 0 non-derivative transactions on 2 Forms 3, 4 and 5, including 0 open-market purchases and 0 sales.

Recent filings we observed

No filings for this CIK appear in our current observation window. The full history is available from the filings endpoint below and on SEC.gov.

Get MUC SEC data through the API

Filing history
curl "https://sec-api.dev/api/v1/filings?cik=1051004&limit=10" \
  -H "Authorization: Bearer $SEC_API_KEY"
Company profile
curl "https://sec-api.dev/api/v1/companies/1051004" \
  -H "Authorization: Bearer $SEC_API_KEY"
Reported XBRL facts
curl "https://sec-api.dev/api/v1/facts/1051004?taxonomy=us-gaap&concept=Revenues&limit=10" \
  -H "Authorization: Bearer $SEC_API_KEY"

Ticker to CIK API · SEC filings API · Blackrock Muniholdings California Quality Fund, Inc. on SEC.gov

Questions

What is MUC’s CIK number?

MUC’s SEC Central Index Key (CIK) is 0001051004, or 1051004 without leading zeros. The SEC’s ticker file lists it as BLACKROCK MUNIHOLDINGS CALIFORNIA QUALITY FUND, INC..

How do I find Blackrock Muniholdings California Quality Fund, Inc.’s 10-K?

Request /api/v1/filings?cik=1051004&form=10-K, or open the company’s EDGAR page and filter by 10-K. Foreign issuers file 20-F or 40-F instead.

Ticker and CIK: SEC company_tickers.json, cached 2026-11-02. Tickers can move between entities; the CIK identifies the filer.

Plain-text version for agents and LLMs: /companies/muc.md

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