# Builders FirstSource Inc. BUILDERS FIRSTSOURCE INC COMPANY GUAR 144A 03/34 6.375

Builders FirstSource Inc. BUILDERS FIRSTSOURCE INC COMPANY GUAR 144A 03/34 6.375 is a security (CUSIP 12008RAS6) tracked across SEC portfolio filings. 34 registered fund positions totaling $52.1M via N-PORT as of 2026-05-31.

## Summary

- Issuer: Builders FirstSource Inc.
- Class: BUILDERS FIRSTSOURCE INC COMPANY GUAR 144A 03/34 6.375
- CUSIP: 12008RAS6
- Asset category: DBT
- 13F holders: 0
- N-PORT fund positions: 34
- N-PORT value: $52.1M
- N-PORT report: 2026-05-31

## Top fund holders (N-PORT)

_Showing 15 of 34 fund positions by value._

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [Bond Fund](https://search.stillhousedata.com/fund/S000000646) | John Hancock Sovereign Bond Fund | $18.9M | 7.13% |
| [AB HIGH INCOME FUND INC](https://search.stillhousedata.com/fund/S000009981) | AB HIGH INCOME FUND INC | $5.1M | 16.72% |
| [JPMorgan High Yield Fund](https://search.stillhousedata.com/fund/S000003486) | JPMorgan Trust II | $4.3M | 6.50% |
| [Nuveen Flexible Income Fund](https://search.stillhousedata.com/fund/S000027100) | Nuveen Investment Trust V | $3.9M | 48.01% |
| [Calvert High Yield Bond Fund](https://search.stillhousedata.com/fund/S000025875) | Calvert Fund | $3.5M | 66.39% |
| [Brigade High Income Fund](https://search.stillhousedata.com/fund/S000079888) | ALPS SERIES TRUST | $2.6M | 25.42% |
| [T. Rowe Price Institutional High Yield Fund](https://search.stillhousedata.com/fund/S000002134) | T. ROWE PRICE INSTITUTIONAL INCOME FUNDS, INC. | $2.6M | 15.40% |
| [DoubleLine Core Fixed Income Fund](https://search.stillhousedata.com/fund/S000028164) | DoubleLine Funds Trust | $1.6M | 2.31% |
| [Nuveen High Yield Income Fund](https://search.stillhousedata.com/fund/S000028810) | Nuveen Investment Trust III | $1.5M | 27.81% |
| Neuberger High Yield Strategies Fund Inc. | Neuberger High Yield Strategies Fund Inc. | $1.1M | 40.26% |
| AllianceBernstein Global High Income Fund Inc | AllianceBernstein Global High Income Fund Inc | $1.1M | 11.75% |
| BlackRock Corporate High Yield Fund, Inc. | BlackRock Corporate High Yield Fund, Inc. | $809K | 4.51% |
| [Virtus Newfleet Multi-Sector Bond ETF](https://search.stillhousedata.com/fund/S000048895) | ETFis Series Trust I | $568K | 13.39% |
| [T. Rowe Price Credit Opportunities Fund, Inc.](https://search.stillhousedata.com/fund/S000045403) | T. ROWE PRICE CREDIT OPPORTUNITIES FUND, INC. | $549K | 13.95% |
| [Insight Select Income Fund](https://search.stillhousedata.com/fund/S000000000) | Insight Select Income Fund | $534K | 28.65% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/12008RAS6.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.