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If You Invested in Mallinckrodt Plc (MNK)

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MNK has not traded since Oct 25, 2023. Its last close was $0.0810, so every figure on this page ends there and the 1, 5 and 10 year results count back from that close.
$1,000 invested 1 Year Before Its Last Close
$4.91
-99.5% price return -99.5% CAGR
-99.5% with dividends reinvested
Bought on Oct 25, 2022 at $16.50 split-adjusted
$1,000 invested 5 Years Before Its Last Close
N/A
Comparable prices start Jun 22, 2022
$1,000 invested 10 Years Before Its Last Close
N/A
Comparable prices start Jun 22, 2022

What $1,000 or $10,000 in MNK Was Worth at Its Last Close

Real historical value by amount invested and how long before the last close
If you invested 1 year before 5 years before 10 years before Since Jun 22, 2022
$1,000 $4.91 -99.51% — — $3.38 -99.66%
$10,000 $49 -99.51% — — $34 -99.66%

Based on real historical closing prices adjusted for stock splits, without dividends, through 2023-10-25. Figures with dividends reinvest each cash dividend at the previous close less the dividend, before taxes. Past performance does not guarantee future results. We start MNK on Jun 22, 2022 because the prices we hold from before that date cannot be compared with the later ones, and a return measured across the two would be wrong.

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$1,000 Investment Over Time

MNK vs S&P 500

Year-by-Year Returns

MNK annual performance
Year Start Price End Price Annual Return Cumulative
2022Jun 22, 2022 to Dec 30, 2022 $24.00 $7.75 -67.7% -67.7%
2023Dec 30, 2022 to Oct 25, 2023 $7.75 $0.0810 -99.0% -99.7%

About Mallinckrodt Plc

Mallinckrodt plc (MNK) is described in recent company communications as a global specialty pharmaceutical business focused on therapeutics that address unmet patient needs, alongside a significant presence in generics, sterile injectables, and active pharmaceutical ingredients. The company operates in the pharmaceutical preparation manufacturing industry within the broader manufacturing sector.

According to Mallinckrodt, its operations are organized into two primary businesses. The Brands business concentrates on autoimmune and rare diseases across multiple therapeutic areas, including endocrinology, gastroenterology, hepatology, neonatal respiratory critical care, nephrology, neurology, pulmonology, ophthalmology, orthopedics, rheumatology, and urology. Within this portfolio, the company highlights products such as Acthar Gel (repository corticotropin injection), which is used in several autoimmune and inflammatory conditions, and TERLIVAZ (terlipressin) for injection, indicated to improve kidney function in adults with hepatorenal syndrome with rapid reduction in kidney function.

The Par Health business, as described in Mallinckrodt’s disclosures, encompasses generic drugs, sterile injectables, and active pharmaceutical ingredients. This business includes a product portfolio that features controlled substances, patches, solid oral extended-release and immediate-release products, liquids, semi-solids, powders and ophthalmics, as well as APIs. Par Health is presented as a distinct generics and sterile injectables platform within the Mallinckrodt group.

In corporate updates, Mallinckrodt has reported that it completed a merger with Endo, Inc., combining Mallinckrodt’s existing operations with Endo’s branded pharmaceuticals, generic pharmaceuticals, sterile injectables, and related assets. Following this merger, the combined company operated through three reportable segments: Specialty Brands, Generics, and Sterile Injectables. The Specialty Brands segment combined Mallinckrodt’s historical specialty brands with Endo’s branded pharmaceuticals, focusing on autoimmune and rare diseases and including Acthar Gel, XIAFLEX and other branded therapeutics. The Generics segment combined Mallinckrodt’s specialty generics with Endo’s generic pharmaceuticals, while the Sterile Injectables segment reflected Endo’s historical sterile injectables business.

Subsequently, Mallinckrodt announced the completion of a spin-off of its combined generics and sterile injectables businesses under the name Par Health, Inc. In the same communication, Mallinckrodt stated that, going forward, it would be known as Keenova Therapeutics and would focus on developing, manufacturing and commercializing branded therapeutics for patients with rare or unaddressed conditions. Keenova is described as comprising the Specialty Brands segment, while Par Health comprises the Generics and Sterile Injectables segments.

In the “About Mallinckrodt” sections of its press releases, the company characterizes itself as dedicated to enhancing lives by providing therapeutics that strive to address unmet patient needs, and as a manufacturer of generics, sterile injectables and active pharmaceutical ingredients. In the “About Keenova” sections of later releases, the combined branded therapeutics business is described as a global developer and manufacturer of branded therapeutics with a diversified brands portfolio across therapeutic areas of significant unmet need, including endocrinology, gastroenterology, hepatology, immunology, neonatal respiratory critical care, nephrology, neurology, pulmonology, ophthalmology, orthopedics, rheumatology and urology.

According to these communications, Keenova is globally headquartered in Dublin, Ireland, and benefits from a U.S. manufacturing footprint with facilities in Louisiana, New Jersey, New York, Pennsylvania and Wisconsin. Mallinckrodt and Keenova also state that they use their websites as channels for distributing important company information, including press releases, investor presentations and other financial information.

Business segments and therapeutic focus

Brands business / Specialty Brands:

  • Focuses on autoimmune and rare diseases.
  • Covers therapeutic areas such as endocrinology, gastroenterology, hepatology, neonatal respiratory critical care, nephrology, neurology, pulmonology, ophthalmology, orthopedics, rheumatology and urology, as described in company materials.
  • Includes branded therapeutics such as Acthar Gel and XIAFLEX, which are cited in Mallinckrodt’s and Keenova’s press releases.

Par Health business:

  • Includes generic drugs, sterile injectables and active pharmaceutical ingredients.
  • Features controlled substances and a range of dosage forms, including patches, solid oral extended-release and immediate-release products, liquids, semi-solids, powders and ophthalmics, as outlined in the company’s segment descriptions.

Corporate developments referenced in company communications

Company news releases state that Mallinckrodt and Endo completed a merger to create a combined therapeutics business with branded, generics and sterile injectables operations. They further state that Mallinckrodt completed a spin-off of the Par Health generics and sterile injectables businesses and that the remaining branded therapeutics business is being introduced as Keenova Therapeutics. Keenova is described as intending to pursue a listing of its ordinary shares on the New York Stock Exchange in a future period, subject to board approval and other conditions, and as focusing on a diversified portfolio of branded therapies across multiple specialty therapeutic areas.

Industry classification

Based on the provided classification, Mallinckrodt is in the pharmaceutical preparation manufacturing industry within the manufacturing sector. Its activities, as described in its own disclosures, include the development, manufacture, marketing and distribution of specialty pharmaceutical products, branded therapeutics, generic pharmaceuticals, sterile injectables and active pharmaceutical ingredients.

Last Close
$0.0810
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Frequently Asked Questions

Mallinckrodt Plc investment returns

How much was $1,000 invested in Mallinckrodt Plc worth at its last close?

If you invested $1,000 in Mallinckrodt Plc (MNK) 1 year before its last close, on 2022-10-25, your investment was worth $4.91 on 2023-10-25, a -99.5% price return without dividends, growing at a compounded rate of -99.5% per year (CAGR).

Has Mallinckrodt Plc outperformed the S&P 500?

Comparison data requires at least 10 years of trading history. Use the calculator above to compare MNK performance over available time periods.

For informational and educational purposes only, not investment advice.