Company · SPXX · CIK 1338561

Nuveen S&P 500 Dynamic Overwrite Fund (SPXX) SEC filings and CIK.

SPXX’s SEC Central Index Key (CIK) is 0001338561, or 1338561 without leading zeros. The SEC’s ticker file lists it as Nuveen S&P 500 Dynamic Overwrite Fund.

Ticker: SPXX
CIK: 0001338561
Other tickers: None
Insider transactions, Q3 2026: 0

Insider trading

In Q3 2026, insiders at Nuveen S&P 500 Dynamic Overwrite Fund reported 0 non-derivative transactions on 1 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 SPXX SEC data through the API

Filing history

curl "https://sec-api.dev/api/v1/filings?cik=1338561&limit=10" \
  -H "Authorization: Bearer $SEC_API_KEY"

Company profile

curl "https://sec-api.dev/api/v1/companies/1338561" \
  -H "Authorization: Bearer $SEC_API_KEY"

Reported XBRL facts

curl "https://sec-api.dev/api/v1/facts/1338561?taxonomy=us-gaap&concept=Revenues&limit=10" \
  -H "Authorization: Bearer $SEC_API_KEY"

Ticker to CIK API · SEC filings API · Nuveen S&P 500 Dynamic Overwrite Fund on SEC.gov

Questions

What is SPXX’s CIK number?

SPXX’s SEC Central Index Key (CIK) is 0001338561, or 1338561 without leading zeros. The SEC’s ticker file lists it as Nuveen S&P 500 Dynamic Overwrite Fund.

How do I find Nuveen S&P 500 Dynamic Overwrite Fund’s 10-K?

Request /api/v1/filings?cik=1338561&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/spxx.md

Independent. Not affiliated with, endorsed by, or sponsored by the U.S. Securities and Exchange Commission. Data is reproduced from public SEC filings and datasets. Not investment advice.