Thanks, Rob. Good morning. We continue to hope you are all healthy and safe as we all traverse both the health and economic impact of the pandemic.
We did begin to see some improvement in economic conditions in the third quarter, but overall, the uncertainty caused by COVID continued to be a factor. As a result, we maintained a cautious approach to our venture lending strategy, including elevating our underwriting of new investments to include a COVID-19 impact analysis. However, with knowledge-based understanding of market risk comes opportunity. Thus, we continue to selectively invest where we see significant strength.
On our last call, we noted that we were beginning to see positive developments in certain technology sectors that are benefiting from the impact of COVID-19, and that trend continued into the third quarter. Utilizing our strong brand, we originated quality investments to 2 tech-oriented companies that provide software platforms. Both companies have strong management teams, committed investors, ample liquidity and have demonstrated growth even through the current uncertain economic cycle.
In the quarter, we made a total of $16 million in investments to the 2 new technology companies I just mentioned as well as to existing life science portfolio companies. The onboarding yield for such investments was 11.9%.
As Rob mentioned, we had strong prepayment activity in the quarter, which reflects the overall strength of our portfolio of borrowers to raise additional equity or complete M&A transactions. During the quarter, we experienced 4 loan prepayments, totaling $43 million, which significantly contributed to our NII and continued to validate our predictive pricing strategy, notwithstanding the challenging economic environment.
The prepayments and accelerated income from these events helped drive a debt portfolio yield for the quarter of 15.1%. Our debt portfolio yield remains at the top of the BDC industry and once again helped us deliver income in excess of our distributions, further increasing our undistributed spillover income to $0.45 per share.
During the quarter, we also received proceeds of $1.8 million from warrants in New Signature, which experienced an M&A transaction, and in Ontrak, a public company where we exercised and strategically sold out of our warrant holdings. As we've noted, structuring investments with warrants and equity rights is a key aspect of our venture debt strategy and an additional value-generate.
Year-to-date in 2020, we've generated $7.9 million in proceeds from warrants, a clear indicator of our successful strategy of including warrants in the structure of our investments as well as further proof that warrants continue to be an important value-generating aspect of our overall business strategy. As of September 30, we held warrant and equity positions in 68 portfolio companies, with a fair value of $13 million.
In the third quarter, we closed $36 million in new loan commitments and approvals and ended the quarter with a committed and approved backlog of $96 million, compared to $101 million at the end of the second quarter.
Moving ahead, and as previously mentioned, we have approximately $96 million in our committed backlog, of which $60 million is committed to current life science portfolio companies as they meet key milestone value drivers in their development. In addition, we have added $77 million in new awarded and approved transactions to our backlog in October. Our pipeline of new opportunities as of today is $372 million. Thus, we believe we are well positioned to generate growth in the portfolio in the fourth quarter.
Turning to our portfolio management activities, we continued to proactively manage our venture debt portfolio in a very challenging economic environment. Some of our debt portfolio companies have demonstrated solid growth and value enhancement, while some have been challenged. So I want to take time to discuss some of the notable specific portfolio activity that took place during the quarter.
In addition to the 4 positive portfolio exits mentioned earlier, 3 credits were downgraded; one of which, Encore Dermatology, was materially impacted by COVID and was, thus, placed on nonaccrual. Another, NanoSteel, was downgraded after a failed effort to complete an M&A transaction. While Encore and NanoSteel downgrades impacted NAV in the quarter, we also ended the quarter with a record level of credits, with our highest credit rating [indiscernible].
Turning now to the venture capital environment. According to PitchBook, approximately $38 billion was invested in VC-backed companies in the third quarter, which was relatively on par with the prior year quarter despite COVID, and the number of deals remained fairly steady, with an increase in the number of late-stage companies funded.
In terms of VC fundraising, $14 billion was raised in the third quarter, and the total of $57 billion raised to date in 2020 already surpasses 2019's total of $55 billion. The number of funds closed continues to be well below last year's pace, meaning that mostly large funds are able to raise funds in the current environment.
In terms of VC-backed exit activity, the IPO window opened up considerably in the third quarter, with 37 venture-backed IPOs contributing to a total exit value of $104 billion, the second highest total on record. With the IPO window still open, we are seeing other firms looking at IPOs as another path to generate additional liquidity.
Turning now to our core markets. We remain focused on the technology, life science and healthcare technology markets, where we continue to selectively seek investment opportunities. During the quarter, we provided funding to 2 new portfolio companies: a $10 million venture loan to Topia, a developer of global talent mobility software, and a $5 million venture loan to BriteCore, a developer of cloud-native software for property and casualty insurance. We also funded an additional $1 million to 2 of our existing portfolio companies.
We enter the last quarter of 2020 with a strong balance sheet, characterized by ample liquidity and lower leverage, and a strong pipeline of new investment opportunities. We believe this positions us well to navigate through the current environment while selectively growing our portfolio and delivering additional long-term shareholder value.
With that, I will now turn the call over to Dan.