# Magnolia Oil & Gas Operating LLC

Magnolia Oil & Gas Operating LLC is a security (CUSIP 559665AB0) tracked across SEC portfolio filings. 28 registered fund positions totaling $23.8M via N-PORT as of 2026-05-31.

## Summary

- Issuer: Magnolia Oil & Gas Operating LLC
- CUSIP: 559665AB0
- Asset category: DBT
- 13F holders: 0
- N-PORT fund positions: 28
- N-PORT value: $23.8M
- N-PORT report: 2026-05-31

## Top fund holders (N-PORT)

_Showing 15 of 28 fund positions by value._

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [MFS High Income Fund](https://search.stillhousedata.com/fund/S000002427) | MFS Series Trust III | $7.8M | 39.95% |
| [T. Rowe Price Institutional High Yield Fund](https://search.stillhousedata.com/fund/S000002134) | T. ROWE PRICE INSTITUTIONAL INCOME FUNDS, INC. | $3.6M | 21.73% |
| [CITY NATIONAL ROCHDALE FIXED INCOME OPPORTUNITIES FUND](https://search.stillhousedata.com/fund/S000039723) | City National Rochdale Funds | $1.8M | 11.70% |
| CALAMOS STRATEGIC TOTAL RETURN FUND | CALAMOS STRATEGIC TOTAL RETURN FUND | $1.3M | 3.60% |
| CALAMOS CONVERTIBLE & HIGH INCOME FUND | CALAMOS CONVERTIBLE & HIGH INCOME FUND | $1.1M | 10.57% |
| CALAMOS CONVERTIBLE OPPORTUNITIES & INCOME FUND | CALAMOS CONVERTIBLE OPPORTUNITIES & INCOME FUND | $984K | 10.16% |
| [Virtus Newfleet Multi-Sector Bond ETF](https://search.stillhousedata.com/fund/S000048895) | ETFis Series Trust I | $875K | 20.62% |
| MFS CHARTER INCOME TRUST | MFS CHARTER INCOME TRUST | $797K | 29.32% |
| BlackRock Corporate High Yield Fund, Inc. | BlackRock Corporate High Yield Fund, Inc. | $762K | 4.25% |
| [T. Rowe Price Credit Opportunities Fund, Inc.](https://search.stillhousedata.com/fund/S000045403) | T. ROWE PRICE CREDIT OPPORTUNITIES FUND, INC. | $723K | 18.36% |
| MFS MULTIMARKET INCOME TRUST | MFS MULTIMARKET INCOME TRUST | $656K | 24.30% |
| [BlackRock High Yield V.I. Fund](https://search.stillhousedata.com/fund/S000062376) | BlackRock Variable Series Funds II, Inc. | $651K | 5.61% |
| New America High Income Fund Inc | NEW AMERICA HIGH INCOME FUND INC | $557K | 28.76% |
| Calamos Dynamic Convertible & Income Fund | Calamos Dynamic Convertible & Income Fund | $269K | 3.93% |
| Calamos Global Dynamic Income Fund | Calamos Global Dynamic Income Fund | $217K | 3.61% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/559665AB0.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.