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Octave Specialty Group (OSG) Stock Price, News & Analysis

OSG NYSE

Ticker history: AMBC became OSG (Octave Specialty Group, Inc.) on . Earlier news and filings retain their original names and dates. View AMBC history.

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Price Move History

Daily moves over 5%
23 238 sessions, November 20, 2025 to November 2, 2026
Largest daily move
+43.4% close of May 7, 2026
1-month change
+13% closing prices, October 2, 2026 to November 2, 2026

Company Description

Overseas Shipholding Group, Inc. (OSG) is a company that provides liquid bulk transportation services for crude oil and petroleum products in the U.S. Flag markets. According to company disclosures, OSG operates a U.S. Flag fleet that includes Suezmax crude oil tankers, conventional and lightering articulated tug-barge units (ATBs), shuttle and conventional medium range (MR) tankers, and non-Jones Act MR tankers that participate in the U.S. Tanker Security Program. The company describes itself as one of the world’s most customer-focused marine transportation companies and is headquartered in Tampa, Florida.

OSG’s business centers on transporting energy-related liquid cargoes. Its fleet composition, as reported in its results for the first quarter of 2024, included MR product carriers, crude oil tankers, refined product ATBs, and lightering ATBs. The operating fleet at that time consisted of both owned and chartered-in vessels, with chartered-in vessels on bareboat charters. This mix of vessel types and chartering arrangements reflects OSG’s focus on serving crude oil and petroleum product movements in U.S. Flag markets.

The company has stated that it is committed to high standards of quality, safety, and environmental programs. It highlights participation in the U.S. Tanker Security Program through its non-Jones Act MR tankers, and emphasizes safety and environmental performance as part of its identity as a marine transportation provider.

In addition to its core transportation activities, OSG has described initiatives related to emerging energy and environmental needs. For example, the company reported that it was awarded a grant from the United States Department of Energy for the engineering and design of a new vessel intended to transport liquified carbon dioxide (LCO2). The planned articulated tug-barge unit is intended to carry CO2 captured by emitters in the Greater Tampa Bay region and across Florida to sequestration sites in the Gulf of Mexico. OSG has also referenced a separate Department of Energy grant related to the proposed Tampa Regional Intermodal Carbon Hub (T-RICH), which is described as an intermediate storage hub at Port Tampa Bay for captured CO2.

OSG has also reported activities intended to support workforce development within the maritime industry. The company has announced scholarship awards through the Women Offshore Foundation to women cadets at U.S. maritime academies, stating that these scholarships are part of a multi-year commitment to provide financial support and mentoring as recipients pursue maritime careers.

From a corporate structure perspective, OSG has undergone a significant ownership change. Saltchuk Resources, Inc., a privately owned family of diversified freight transportation, marine service, and energy distribution companies, announced a definitive merger agreement to acquire OSG. Subsequent announcements reported the commencement of a tender offer, the expiration of the Hart-Scott-Rodino waiting period, and the completion of the transaction. Saltchuk stated that the transaction closed and that OSG became a wholly owned subsidiary of Saltchuk. It was also announced that, as a result of the completion of the transaction, all shares of OSG common stock would cease trading on the New York Stock Exchange prior to the opening of trading on July 10, 2024, and that the shares would subsequently be delisted from NYSE and deregistered under the Securities Exchange Act of 1934, as amended.

Following the close of the transaction, communications from Saltchuk and OSG stated that OSG would operate as a standalone business unit within Saltchuk and become a member of Saltchuk’s family of companies. Saltchuk has described OSG as adding energy shipping to its existing lines of business, which include domestic shipping, international shipping, logistics, marine services, energy distribution, and air cargo.

OSG has also released financial information, such as its first quarter 2024 results, which included shipping revenues, time charter equivalent (TCE) revenues, operating income, net income, and details on its fleet and charter mix. These disclosures provide insight into the company’s operations in the U.S. Flag tanker and ATB markets, though specific figures are time-bound and subject to change in subsequent reporting periods.

Relationship to Octave Specialty Group, Inc. (Ticker OSG)

Separately, Octave Specialty Group, Inc. is described in a Business Wire release as a global specialty insurance firm that builds, buys, and scales niche insurance distribution and underwriting businesses. It focuses on operational excellence, disciplined growth, and innovation while creating a portfolio of companies in the specialty insurance space. An SEC Form 8-K filing identifies Octave Specialty Group, Inc. as the registrant and notes that Ambac Financial Group, Inc. is a former name. The filing explains that Octave Specialty Group completed an acquisition of Armada Corp Capital, LLC pursuant to a membership interest purchase agreement, with the transaction financed in part through borrowings. The filing also refers to unaudited and audited financial statements of ArmadaCorp Capital, LLC and unaudited pro forma combined financial information of the company.

The ticker symbol OSG has therefore been associated with different corporate entities over time. Historically, it has been used for Overseas Shipholding Group, Inc., a marine transportation company, and more recently SEC filings reference Octave Specialty Group, Inc., a specialty insurance firm that builds, buys, and scales niche insurance distribution and underwriting businesses. Ambac Financial Group, Inc. is identified as a former name in the Octave Specialty Group, Inc. filing.

Key Business Characteristics

  • Industry focus (historical): OSG has been described as a provider of liquid bulk transportation services for crude oil and petroleum products in U.S. Flag markets, with a fleet including Suezmax crude oil tankers, ATBs, shuttle and conventional MR tankers, and non-Jones Act MR tankers.
  • Industry focus (Octave Specialty Group, Inc.): Octave Specialty Group, Inc. is described as a global specialty insurance firm that builds, buys, and scales niche insurance distribution and underwriting businesses.
  • Corporate status: Public announcements state that Overseas Shipholding Group, Inc. entered into and completed a transaction under which Saltchuk Resources, Inc. acquired all outstanding shares not already owned, resulting in OSG becoming a wholly owned subsidiary of Saltchuk and its shares ceasing to trade on the NYSE, with subsequent delisting and deregistration described.
  • Headquarters (OSG): OSG is described as headquartered in Tampa, Florida.
  • Headquarters (Octave Specialty Group, Inc.): An SEC filing lists a New York, New York address for Octave Specialty Group, Inc., and identifies Ambac Financial Group, Inc. as a former name.

Use of the OSG Symbol

Investors researching the symbol OSG should be aware that it has been associated with Overseas Shipholding Group, Inc., a U.S. Flag liquid bulk transportation company, and with Octave Specialty Group, Inc., a global specialty insurance firm that builds, buys, and scales niche insurance distribution and underwriting businesses. Public communications and SEC filings indicate that Overseas Shipholding Group, Inc. became a wholly owned subsidiary of Saltchuk Resources, Inc. and that its shares ceased trading on the New York Stock Exchange and were to be delisted and deregistered. SEC filings for Octave Specialty Group, Inc. describe a specialty insurance business and reference Ambac Financial Group, Inc. as a former name.

Stock Performance

$5.20
+3.17%
+0.16
Last updated: November 2, 2026 at 16:00
-33.2%
Performance this year
$234.3M

Octave Specialty Group (OSG) closed at $5.20 on November 2, 2026. So far this year, the price has lost 33.2%.

See what a $1,000 investment in OSG would be worth today

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OSG Metrics & Rankings

Price returns through November 2, 2026. Month and year figures include the first trading day. Ranking links may use different dates.

Latest News

Octave Specialty Group has 10 recent news articles. Of the recent coverage, 5 articles coincided with positive price movement and 4 with negative movement. Key topics include earnings date, earnings. View all OSG news →

SEC Filings

Octave Specialty Group has filed 10 recent SEC filings, including 8 Form 4, 1 Form SCHEDULE 13G/A, 1 Form SCHEDULE 13G. The most recent filing was submitted on . SEC filings provide transparency into a company's financial condition, material events, and regulatory compliance. View all OSG SEC filings →

Financial Highlights

Octave Specialty Group generated $251.2M in revenue in FY2025, and net income was -$259.1M. Diluted earnings per share stood at -$5.93. The company generated -$52.3M in operating cash flow.

$251.2M
Revenue (FY2025)
-$259.1M
Net Income (FY2025)
-$52.3M
Operating Cash Flow

Upcoming Events

NOV
09
November 9, 2026 Earnings

Q3 2026 Results Release

Octave Specialty Group to release Q3 2026 results after market close on Nov 9, 2026; material for investors published on company website.
NOV
10
November 10, 2026 Earnings

Q3 2026 Earnings Call

CEO and CFO will host a conference call Nov 10 at 8:30am ET with live webcast and archived recording on the company website.
DEC
31
December 31, 2026 Corporate

EY engaged for FY2026

Audit Committee approved engagement of Ernst & Young LLP for fiscal year ended 2026, subject to acceptance.

Octave Specialty Group has 3 upcoming scheduled events. The next event, "Q3 2026 Results Release", is scheduled for November 9, 2026 (in 7 days). 2 of them are earnings releases or calls. Investors can track these dates to stay informed about potential catalysts that may affect the OSG stock price.

Short Interest History

Last 12 Months

Short interest in Octave Specialty Group (OSG) currently stands at 1.4 million shares, down 3.3% from the previous reporting period, representing 3.4% of the float. Since November 2025, short interest has decreased by 40.5%.

Days to Cover History

Last 12 Months

Days to cover for Octave Specialty Group (OSG) currently stands at 2.4 days, down 21.9% from the previous period. The ratio is the reported short interest divided by the average daily trading volume. Since November 2025, the figure has decreased by 27.2%. Across the settlements charted above, it has ranged from 1.0 to 4.5 days.

OSG Company Profile & Sector Positioning

Octave Specialty Group (OSG) operates in the Insurance - Specialty industry within the broader Financial Services sector and is listed on the NYSE.

Investors comparing OSG often look at related companies in the same sector, including MBIA Inc. (MBI), James River Group Holdings, Inc. (JRVR), AMERISAFE, Inc. (AMSF), Investors Title Co (ITIC), and Employers Holdings, Inc. (EIG). Comparing financial metrics, valuation ratios, and stock performance across these peers can help investors evaluate OSG's relative position within its industry.

Frequently Asked Questions

The current stock price of Octave Specialty Group (OSG) is $5.20 as of November 2, 2026.

The market cap of Octave Specialty Group (OSG) is approximately $234.3M. Learn more about what market capitalization means .

The FY2025 revenue of Octave Specialty Group (OSG) is $251.2M, from its most recent completed fiscal year.

The FY2025 net income of Octave Specialty Group (OSG) is -$259.1M, from its most recent completed fiscal year.

The diluted earnings per share (EPS) of Octave Specialty Group (OSG) is -$5.93 for FY2025, its most recent completed fiscal year. Learn more about EPS .

The operating cash flow of Octave Specialty Group (OSG) is -$52.3M for FY2025, its most recent completed fiscal year. Learn about cash flow.

Overseas Shipholding Group, Inc. has been described as a publicly traded company providing liquid bulk transportation services for crude oil and petroleum products in the U.S. Flag markets. Its U.S. Flag fleet consisted of Suezmax crude oil tankers, conventional and lightering ATBs, shuttle and conventional MR tankers, and non-Jones Act MR tankers that participate in the U.S. Tanker Security Program.

Company communications state that Overseas Shipholding Group, Inc. is headquartered in Tampa, Florida.

Saltchuk Resources, Inc. and Overseas Shipholding Group, Inc. announced a definitive merger agreement under which Saltchuk agreed to acquire OSG. Subsequent announcements reported that the transaction closed, OSG became a wholly owned subsidiary of Saltchuk, and that all shares of OSG common stock would cease trading on the New York Stock Exchange prior to the opening of trading on July 10, 2024, with the shares to be delisted from NYSE and deregistered under the Securities Exchange Act of 1934, as amended.

Saltchuk stated that OSG would become its seventh business unit, adding energy shipping to Saltchuk’s diversified lines of business. It also said that OSG would remain standalone and independently managed and would operate as a standalone business unit within Saltchuk’s family of companies.

A Business Wire release describes Octave Specialty Group, Inc. as a global specialty insurance firm that builds, buys, and scales niche insurance distribution and underwriting businesses. It notes a focus on operational excellence, disciplined growth, and innovation while creating a harmonized portfolio of companies.

The SEC Form 8-K identifies Octave Specialty Group, Inc. as the registrant and lists Ambac Financial Group, Inc. as a former name. It explains that on October 31, 2025, Octave Specialty Group completed an acquisition of Armada Corp Capital, LLC pursuant to a membership interest purchase agreement, with total consideration paid in cash and financed in part with borrowings. The filing also references unaudited and audited financial statements of ArmadaCorp Capital, LLC and unaudited pro forma combined financial information of the company.

The materials provided associate the symbol OSG with Overseas Shipholding Group, Inc., a liquid bulk transportation company, and with Octave Specialty Group, Inc., a global specialty insurance firm. SEC filings for Octave Specialty Group, Inc. identify it as the registrant and reference Ambac Financial Group, Inc. as a former name, while separate news releases describe Overseas Shipholding Group, Inc. under the OSG symbol prior to its acquisition by Saltchuk.

OSG has reported that its operating fleet included MR product carriers, crude oil tankers, refined product ATBs, and lightering ATBs. It has also stated that non-Jones Act MR tankers in its fleet participate in the U.S. Tanker Security Program.

OSG announced that it was awarded a grant from the United States Department of Energy for the engineering and design of a new articulated tug-barge unit to transport liquified carbon dioxide captured by emitters in Florida to sequestration sites in the Gulf of Mexico. The company also referred to a separate Department of Energy grant for the proposed Tampa Regional Intermodal Carbon Hub (T-RICH), described as an intermediate storage hub at Port Tampa Bay for captured CO2.