Table of Contents
- Mark Bertolini’s Career and Wealth Timeline
- How Bertolini Built His Net Worth
- Why Net Worth Estimates Vary (2024–2026)
- Oscar Health Stock: Insider Trades and Market Impact
- 10 Key Facts About Bertolini’s Net Worth
- Frequently Asked Questions
Mark Bertolini’s Career and Wealth Timeline
Mark T. Bertolini, born in 1956, began his career in the early 1980s as a healthcare consultant, leveraging his accounting degree to navigate the complex healthcare landscape. By the late 1990s, he joined Cigna, where he rapidly ascended to leadership roles, including President and Chief Operations Officer. His strategic acumen set the stage for his most impactful tenure at Aetna.
Aetna Era (2011–2021)
As Aetna’s CEO from 2011 to 2021, Bertolini oversaw a transformative period. He led the $67 billion merger with CVS Health in 2018, a move that reshaped the healthcare industry. During this time, his net worth surged, with estimates of $197 million in 2024 from Aetna stock holdings (925,317 shares). His leadership also included partial integration with Humana, further solidifying Aetna’s market position.
Bertolini’s tenure at Aetna was marked by a focus on holistic healthcare, including mental health and wellness programs. This approach not only improved patient outcomes but also positioned Aetna as a leader in value-based care models. By 2021, the company had expanded its services to over 45 million members, a testament to his operational expertise.
Post-Aetna: Oscar Health and Consulting
After leaving Aetna, Bertolini became CEO of Oscar Health in 2023. His focus on tech-driven healthcare solutions at Oscar Health has diversified his income streams. Post-Aetna, he earned revenue through book sales (*Fixing Health Care from the Inside*), speaking engagements, and consulting roles in healthcare conferences. These activities have sustained his net worth despite reduced salary post-CEO.
Bertolini’s book, published in 2022, critiques the U.S. healthcare system and advocates for integrated care models. It has sold over 50,000 copies, generating royalties that contribute $500,000 annually. His speaking engagements at events like the World Health Forum and Fortune Healthcare Summit have also become a significant revenue source.
How Bertolini Built His Net Worth
Bertolini’s wealth is a blend of stock portfolios, executive compensation, and post-CEO income. His core assets include Aetna and Oscar Health stocks, with the latter playing a pivotal role in 2026.
Aetna’s Role in Wealth Accumulation
During his Aetna tenure, Bertolini’s net worth was heavily tied to Aetna stock. By 2024, his holdings were valued at $197 million. The CVS merger amplified his stock value, while his executive salary and bonuses contributed an additional $15–20 million annually. However, post-merger stock volatility introduced fluctuations in his net worth estimates.
The merger with CVS Health also led to the creation of the Aetna Better Health division, which Bertolini helped integrate. This division now serves over 15 million members, a legacy of his leadership that continues to generate shareholder value.
Oscar Health’s Impact
As Oscar Health’s CEO since 2023, Bertolini owns 9.2 million OSCR shares, valued at $192.3 million as of May 2026. His April 2026 purchase of 1 million shares signals confidence in Oscar Health’s growth. Unlike Aetna, Oscar Health’s tech-driven model offers long-term valuation potential, though its stock has seen $11.9 million in unrealized losses since 2021.
Oscar Health’s innovative use of AI in claims processing and preventive care has attracted investors. Bertolini’s strategic investments in these technologies have positioned the company as a leader in digital health, with a 20% year-over-year growth rate in 2025.
Other Income Streams
Bertolini’s post-Aetna income includes book royalties, speaking fees (up to $100,000 per engagement), and consulting. These sources account for $5–7 million annually, stabilizing his net worth amid stock market fluctuations.
His consulting work with organizations like the Healthcare Transformation Alliance has further diversified his income. In 2025 alone, he advised on $200 million in healthcare tech investments, earning fees tied to project outcomes.
Did You Know?
Bertolini’s 2026 net worth discrepancy ($122M vs. $197M) stems from Oscar Health stock valuations and reporting timelines. For example, MarketScreener cited $16 million in 2024 due to outdated data, while SEC filings in 2026 reflect higher values.
Why Net Worth Estimates Vary (2024–2026)
Net worth estimates for Bertolini range widely due to stock market dynamics and reporting differences. Three key factors explain this variance:
Stock Volatility
Oscar Health’s stock performance directly affects Bertolini’s wealth. A $10/share increase in OSCR would add $92 million to his net worth, while a $5/share drop could erase $46 million. This volatility creates conflicting estimates across platforms.
In 2025, OSCR’s stock peaked at $35/share in Q2 but fell to $22/share by year-end due to regulatory challenges. Bertolini’s April 2026 purchase at $28/share suggests a long-term bullish stance.
Reporting Timelines
Some sources use outdated data. For example, MarketScreener listed Bertolini’s net worth at $16 million in 2024, but SEC filings in 2026 revealed $192.3 million from OSCR shares. Discrepancies arise when platforms fail to update stock valuations in real time.
Platforms like Cine Net Worth updated their estimates in 2025 to $100 million, while GuruFocus cited $197 million in 2026. The difference reflects the timing of stock market closures and data aggregation.
Career Transitions
Post-Aetna income streams (books, speaking) and Oscar Health’s growth have shifted Bertolini’s wealth composition. While Aetna stock dominance waned, OSCR shares became the primary driver, leading to higher 2026 estimates.
His transition to Oscar Health also introduced new risks. For instance, the company’s 2025 EBITDA margin dropped to 8% from 12% in 2024, prompting investors to question Bertolini’s stock valuation assumptions.
Oscar Health Stock: Insider Trades and Market Impact
Bertolini’s Oscar Health stock holdings and trading activity are critical to understanding his net worth. Here’s a breakdown of key data:
| Date | Transaction | Shares | Value (USD) |
|---|---|---|---|
| April 6, 2026 | Purchase | 1,000,000 | $10 million |
| 2021–2026 | No Sales | 0 | -$11.9 million (unrealized loss) |
| July 2025 | Options Exercise | 500,000 | $7.5 million |
Market Confidence
Bertolini’s April 2026 purchase of 1 million OSCR shares demonstrates his confidence in Oscar Health’s tech-driven healthcare model. Analysts note that his stock purchases align with Oscar Health’s strategic investments in AI-driven care management tools, which could boost long-term valuations.
In Q1 2026, Oscar Health launched CareAI, a platform that uses machine learning to predict hospital readmissions. Early data shows a 30% reduction in readmission rates among pilot participants, validating Bertolini’s investment thesis.
10 Key Facts About Mark Bertolini’s Net Worth
1. Net Worth Range in 2026
Estimates range from $122.3 million to $197 million, depending on Oscar Health stock valuations and reporting timelines.
2. Oscar Health Stock Holdings
Bertolini owns 9.2 million OSCR shares, valued at $192.3 million as of May 2026.
3. Recent Insider Trade
On April 6, 2026, he purchased 1 million OSCR shares, signaling confidence in Oscar Health’s growth.
4. Aetna Stock Value
As of 2024, Bertolini held 925,317 AET shares, valued at $197 million.
5. Post-Aetna Income Streams
Includes book royalties, speaking fees ($100k+ per engagement), and consulting.
6. Stock Valuation Volatility
OSCR stock has seen $11.9 million in unrealized losses since 2021.
7. Birth Year Verification
Correct birth year: 1956 (some sources incorrectly list 1959).
8. Career Milestones
CEO of Aetna (2011–2021), CEO of Oscar Health (2023–present), and former Cigna executive.
9. Net Worth Decline in 2024
Some platforms listed $16 million in 2024 due to outdated AET stock valuations.
10. Public Speaking Revenue
Earnings from healthcare conferences contribute $5–7 million annually.
Frequently Asked Questions
1. What is Mark Bertolini’s net worth in 2026?
As of June 2026, it ranges from $122.3 million to $197 million, depending on Oscar Health stock performance and reporting sources.
2. How did Mark Bertolini make his money?
Primarily through Aetna and Oscar Health stock holdings, executive compensation, book royalties, and post-CEO consulting/speaking engagements.
3. Why is there a discrepancy in Bertolini’s net worth estimates?
Stock valuation fluctuations (e.g., OSCR’s $11.9 million unrealized loss) and outdated data from some platforms (e.g., MarketScreener’s $16 million 2024 estimate) cause variance.
4. Does Mark Bertolini still own Aetna stock?
No. Post-merger with CVS Health, Bertolini’s wealth transitioned to OSCR shares, though historical AET stock valuations are cited in some sources.
5. What role does Oscar Health play in Bertolini’s wealth?
OSCR stock constitutes $192.3 million of his 2026 net worth, with recent insider purchases (1 million shares in April 2026) indicating confidence in the company’s growth.
6. Has Bertolini’s net worth decreased since leaving Aetna?
Not significantly. Post-Aetna income from books, speaking, and Oscar Health stock has maintained his net worth, despite stock market volatility.
Conclusion: Final Verdict on Bertolini’s Net Worth
Mark Bertolini’s net worth in 2026 reflects a blend of strategic investments, career transitions, and market dynamics. While Oscar Health stock dominates his wealth (up to $192.3 million), discrepancies arise from stock valuation timelines and reporting accuracy. His insider trades, such as the 2026 OSCR purchase, highlight his confidence in tech-driven healthcare solutions. For readers, the key takeaway is that Bertolini’s wealth is not static but shaped by evolving market conditions and leadership roles.
For the most accurate net worth estimate, prioritize sources using SEC filings and real-time stock valuations, as outdated data (e.g., MarketScreener’s 2024 figures) can mislead. Bertolini’s career underscores the importance of diversifying income streams in the healthcare sector, a lesson for aspiring business leaders.
