NuStar Energy stock holds steady as preferred NSS offers high coupon income

NuStar Energy stock remains focused on income as the NSS preferred security offers a high fixed coupon and steady distributions, while the partnership continues to operate midstream assets in a mixed energy-price environment.

NuStar Energy L.P. stock, linked to the partnership that issues the NSS preferred security (ISIN US63050T1060), is drawing attention from income-focused investors as the preferred units continue to offer a high fixed coupon and steady cash distributions as of September 3, 2026. The midstream partnership operates terminals, pipelines and limited refining assets, providing fee-based cash flows that underpin the preferred payments.

Income focus with preferred NSS coupon

NuStar Energy L.P. is a mid-size midstream operator headquartered in San Antonio, Texas, with a focus on terminals, pipelines and refining-related assets according to an overview of US energy infrastructure companies dated September 2, 2026. For investors in the NSS preferred units, the key figure is the fixed coupon rate, which remains materially higher than yields on many investment-grade bonds and common equity dividends in the broader market as of early September 2026. This high coupon, combined with NuStar Energy L.P.'s fee-based midstream revenues, continues to support regular quarterly distributions to NSS holders.

In the most recently reported fiscal year and interim periods within the last two years, NuStar Energy L.P. has historically generated substantial revenue and segment operating income from its pipeline and storage operations, with volumes supported by ongoing refinery runs and product movements across its network. Historical data show that revenue from core midstream operations has grown compared with earlier years, while adjusted EBITDA has remained relatively stable, supporting leverage and coverage metrics that are closely watched by preferred investors. Although detailed current-quarter figures are not visible in the available same-day sources, the partnership's continued classification as a mid-size operator with terminals and pipelines reflects a still-relevant operating scale as of September 2, 2026.

Operational backdrop in a mixed energy market

The energy-market backdrop for NuStar Energy L.P. in early September 2026 is characterized by mixed price movements but solid underlying activity, as refinery runs have moved higher while crude stocks declined according to data summarized in the US Energy Information Administration's weekly petroleum report dated September 2, 2026. In that overview, NuStar Energy L.P. appears among listed midstream and refining-related companies, underlining its role as an operator of terminals and pipelines that benefit from ongoing movements of refined products and crude. For holders of NSS preferred units, this environment matters because higher refinery utilization and steady product flows generally support throughput volumes in NuStar's pipeline and terminal segments, reinforcing cash generation.

Comparing current conditions with prior years, recent EIA-based summaries indicate that refinery runs in late August and early September 2026 are above levels seen in parts of 2024 and 2025, while crude inventories have trended lower. Historically, periods of higher refinery utilization and lower stocks have coincided with healthy throughput volumes for midstream operators, offering a constructive backdrop for NuStar Energy L.P.'s asset base. Even if individual quarterly numbers for NuStar are not fully detailed in the available day-filtered sources, the macro comparison suggests that the operating environment in September 2026 is at least as supportive as, and in some metrics stronger than, previous years for NuStar's core business lines.

Representative product and customer base

NuStar Energy L.P.'s business model centers on fee-based services in the midstream energy chain. A representative activity is the transportation and storage of refined petroleum products and crude oil through its pipeline and terminal network, including assets in regions such as the Permian Basin where NuStar entities file common-carrier tariffs for transportation and storage services. Customers typically include refiners, integrated oil companies and marketers that contract for capacity, providing relatively stable revenue streams over multi-year periods.

Historically, NuStar Energy L.P. has reported segment revenue figures from pipelines and storage that contribute a significant share of total partnership revenue. In earlier fiscal years, revenue from core midstream operations has represented a substantial portion of overall sales, with segments such as transportation and storage showing year-over-year changes linked to volumes and tariff adjustments. While current-period segment numbers are not detailed in the same-day sources, the continued filing of tariffs and inclusion in midstream operator lists confirms that NuStar remains an active player in these markets in 2026, supporting the cash flows that stand behind quarterly NSS preferred distributions.

Stock perspective for NuStar Energy and NSS

From a stock-market perspective, NuStar Energy L.P.'s common units and the NSS preferred security provide different risk and return profiles for investors. As of early September 2026, broader equity and energy indices have experienced only minor gains in recent sessions according to general market commentary, while midstream partnerships continue to trade with a focus on yield and cash-flow stability. In this environment, NuStar's NSS preferred units stand out for their high fixed coupon compared with many common equity dividends and investment-grade bond yields.

For investors, the key comparison is often between the NSS coupon and prevailing yields on other income-oriented securities. With short-term interest rates and bond yields having moved materially higher over 2024 and 2025, some high-yield equities and preferreds have had to offer more compelling income streams to remain attractive. NuStar Energy L.P.'s continued classification as a mid-size operator with stable terminals and pipelines, combined with the high coupon on the NSS preferred, helps keep the security competitive in this yield-focused comparison as of September 3, 2026. The market price of NSS relative to par value determines the effective yield: when NSS trades below par, the yield exceeds the stated coupon, while trading above par reduces the effective yield; income-focused investors watch this relationship closely even if detailed intraday price data are not included in the available sources.

NuStar Energy L.P. at a glance

• Company: NuStar Energy L.P.
• ISIN: US63050T1060
• Ticker: NSS
• Trading venue: NYSE
• Sector / Industry: Energy / Midstream oil and gas
• Index membership: Not included in major headline indices such as the S&P 500