NEW YORK (TheStreet) -- Wilbur Ross is keeping an eye on Greece, but it isn't the only thing influencing his investing.

The billionaire investor told CNBC on Monday that he believes there is a 60% chance that Greece will stay in the eurozone. He added that whatever happens, the consequences may not be as dire as they seem. "It shouldn't be that this is terribly disruptive to world markets," he said.

Ross has built his $3 billion fortune largely by betting on bankruptcies, distressed assets and troubled banks. His WL Ross & Co. is part of a group of investors that pumped $1.8 billion into Greece's Eurobank in 2014, one of the country's largest banks.

Ross is also placing bets in the U.S. His public equity portfolio, listed under Invesco Private Capital, is valued at $804.1 million as of the end of the first quarter. Here is a look at the nine stocks he owns as of March 31.

1. Navigator Holdings

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Navigator Holdings (NVGS) is Ross' top holding. He holds 21.9 million shares, valued at $417.6 million as of March 31. The stock comprises 51.9% of Invesco's portfolio.

Ross first bought into the company in the fourth quarter of 2013 and has largely maintained his position since. He downsized it slightly only once in the third quarter of 2014.

Navigator Holdings owns and operates a fleet of handysize liquefied gas carriers. The company last reported earnings on May 5, including net income of $22 million for the first quarter of the year, up 30.5% compared with the same period the year before. Earnings per share increased to 40 cents from 31 cents after a writeoff of deferred financing costs equating to 3 cents per share.

2. Talmer Bancorp

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Ross acquired a stake in Talmer Bancorp  (TLMR) before the company went public in 2014. His firm still has representation on its board, though Ross himself resigned in November of last year.

As per the bank holding company's 2015 proxy statement, investment funds affiliated with WL Ross & Co. hold 9.7 million Talmer Bancorp shares, translating to a 13.6% stake in the company. His position is valued at $148 million as of the end of the first quarter and comprises 18.4% of Invesco's portfolio.

The Troy, Mich.-based company reported first-quarter financials on April 30. Its net income for the period was $9.4 million, compared with $12.5 million in the fourth quarter of 2014 and $38.2 million in the first quarter of 2014. Earnings per diluted common share also decreased to $0.12 for the first quarter of this year, compared to $0.16 in the fourth quarter of 2014 and $0.52 in the first quarter of 2014.

According to the company, the decline in net income was primarily the result of a $3 million increase in transaction and integration expenses related to the acquisition of First Huron Corp. and the operational integration of Talmer West Bank.

3. Exco Resources

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Wilbur Ross is a long-time  Exco Resources (XCO) shareholder. At the end of the first quarter of the year he held 51.1 million shares of the company in a stake valued at $93.5 million. The stock makes up 11.6% of Invesco's portfolio.

Ross became a director at the Dallas-based oil and gas company in 2012 and continues in the post today. He served alongside fellow billionaire investor T. Boone Pickens on the company's board before Pickens' resignation in March 2015. According to Exco's 2015 proxy statement, WL Ross & Co. has an 18.7% stake in the company.

4. Sun Bancorp

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Ross' 4.3 million Sun Bancorp (SNBC) shares give him a 22.9% stake in the bank holding company. As of the end of the first quarter, his position is worth $80.5 million and comprises 10% of Invesco's portfolio.

Ross struck a deal with Sun Bancorp in 2010 for a $100 million investment and has served on the company's board of directors since then. Shares were purchased at $4 each, and since then, the price has increased significantly. Sun Bancorp closed the day Friday priced at $19.34.

Sun Bancorp released first-quarter earnings on April 27. It reported $2.8 million in net income for the period, or 15 cents per share -- a significant improvement from the same period the year before, when it reported a net loss of $1.9 million and loss of 11 cents per share. "We believe 2015 will continue to be a transitional year as we begin to deliver on positive earnings," company CEO Thomas O'Brien said in a statement.

5. Cascade Bancorp

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Ross scooped up shares of Cascade Bancorp (CACB) in late 2010 as part of a $177 million offering of the company's common stock. Today, he maintains a 15.83% in the firm, and WL Ross & Co. has representation on its board.

As of the end of the first quarter, the billionaire investor holds 11.5 million shares worth $55.1 million. The position counts for 6.9% of Invesco's portfolio.

On May 4, Cascade Bancorp reported first-quarter financials of $5.1 million in net income, or 7 cents per share, nearly exactly the same as the prior quarter. It did mark a notable improvement form the first quarter of 2014, however, when the bank holding company reported $900,000 in net income, or 2 cents per share.

6. Xenon Pharmaceuticals

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Xenon Pharmaceuticals (XENE) is a relatively new position for Ross. He first picked up a public stake in the clinical-stage biopharmaceutical company in the fourth quarter of 2014 and has since left his position untouched at 444,655 shares. As of March 31, his stake is valued at $7.6 million. It comprises 1% of Invesco's portfolio.

Ross disclosed his position on the heels of the company's IPO in November 2014.

Xenon reported first-quarter earnings on May 12, including $4 million in total revenue, compared to $5 million in the same period the year before. It also reported a net loss of $4.2 million, in contrast to its net income of $1.4 million during the first quarter of 2014. Xenon attributed the decrease to lower revenue, higher operating expenses and unrealized foreign exchange losses.

7. Inphi

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Ross bought into Inphi  (IPHI) during the fourth quarter of 2014, picking up 71,424 shares. In the first quarter of 2015, he reduced his holdings slightly to 61,424 shares, valued at $1.1 million. The position comprises 0.1% of Invesco's portfolio as of March 31.

Based in California, Inphi is a high-speed analog semiconductor company. It reported first-quarter earnings on April 28. The company experienced year-over-year revenue growth of 90% to $59.2 million from $31.2 million. It also reported GAAP net loss in the first quarter of $9.7 million, or 26 cents per common share, compared with a loss of $1.0 million, or 3 cents per share, during the same period the year before.

8. T2 Biosystems

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Ross waited a bit to invest in T2 Biosystems (TTOO). The in-vitro diagnostics company went public in the third quarter of 2014; however, Ross did not invest in it until the first quarter of 2015.

On May 1, T2 Biosystems released its first-quarter results. It reported a net loss of $10.6 million, or 53 cents per share, due in large part to increased operating expenses, share-based compensation charges and incremental expenses related to being a public company.

9. Nimble Storage

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Nimble Storage (NMBL) is Wilbur Ross' other new first-quarter buy. During the first three months of 2015, he picked up 6,594 NMBL shares valued at $147,000. The position counts for 0.01% of Invesco's portfolio.

In its first-quarter earnings results, released on May 26, Nimble reported a 53% revenue increase to $71.3 million from $46.5 million during the same period the year prior. Likewise, it reported GAAP net loss of $29 million, or 38 cents per share, in contrast to a net loss of $19.6 million, or 28 cents per share, the year before.

This article is commentary by an independent contributor. At the time of publication, the author held no positions in the stocks mentioned.