Thanks, Michael, and good morning to everyone. Generally, I'd like to briefly review what it is that we actually do here at GAIN, and this helps really to keep us focused on what our long-term goals are for GAIN while we update here and discuss the near-term results.
So Gladstone Investment provides capital for the buy-out of businesses generally with annual sales between $20 million to $100 million. Our investment in any one company is comprehensive in that it usually consists of senior and subordinated debt in combination with equity. This combination of debt and equity produces the mix of assets which is the basis of our strategy for Gladstone Investment. Whereby the debt portion of our investment provides the income to pay and grow our monthly distributions, and then we look to the equity portion to increase the value and provide capital gains going forward from time to time.
We might think about how are we different from other BDCs and other finance companies in that while we take a large equity position in the companies that we purchase, and that differs from other public BDCs, business development companies, that are predominantly debt-focused. So for instance, the proportion of equity and debt for the investments in our portfolio is approximately 30% to 70%. Most other BDCs' portfolios are around 10% to 90% in their proportion of equity to debt. As to other private equity funds, which are generally 10-year term private partnerships with a longer liquidity horizon for the investors, we are different in that, as a publicly traded entity, our structure allows daily liquidity for shareholders, frankly, just by going to the stock exchange and trading the stock. So also, we are able to keep an investment longer in our portfolio as we do generate income prior to the exit for an equity gain.
Now I would like, this time, to talk a little bit about our exit strategies. We've not necessarily done this previously, but I believe it's important, so we get a better understanding of our profile. Although we are able to hold our investments that I mentioned for long periods of time, our quarterly equity valuations of our portfolio can be volatile and not always actually representative of the true underlying exit value of those companies. So it is necessary, therefore, that we look to the realized equity portion of our assets as a contributor to the overall future value of our company, and we must manage these exits accordingly. Since inception in 2005, we have actually exited 4 of our management-supported buy-out investments, which generated over $54 million in realized capital gains, each one, in turn, actually generating a realized capital gain.
The buy-out market today is currently quite frothy, and the prices being paid for good companies continues to be quite steep. So in this environment, we will carefully assess and manage the risk-reward merits of liquidity in our equity positions, keeping in mind that while it is tempting to sell a portfolio company in this market, it would reduce our asset base, and then we are challenged to incrementally replace that investment in a high-purchase value environment. So the sum of this is just we need to focus on managing exits, which we have done in the past and will continue doing, going forward.
And with the continued growth in our operating income and the periodic realized gains, our board did declare a distribution of $0.06 per share per month for January, February and March, which is a run rate of $0.72 per share per annum, which, in fact, will cover -- we cover with our NII. Additionally, we also had a onetime special distribution of $0.05 per share in December 2014. So this represents a third calendar year in a row that a onetime special cash distribution has been made to our common stockholders.
Let's talk about our deal origination and see how that works. So we have a very high priority on our deal origination. We have a broad and deep geographic footprint with offices in New York City, Los Angeles, Chicago and, of course, here in McLean, outside of Washington, D.C. We primarily focus our efforts, our calling efforts, on what we call independent sponsors, middle market investment bankers and other sources that help us create proprietary investment opportunities. We do not depend on others to negotiate or structure our investments. Generally, our investments will include partnering with a management team and other sponsors in the purchase of a business. And actually, our strategy of providing a financing package, which includes both the debt and the majority of the equity, is a competitive advantage as it gives the seller, and the independent sponsor, if one is involved, and the management team that would be looking to be involved in the business, a high degree of comfort that this purchase will happen, at least, from the financing perspective.
In addition to these outright purchases, occasionally, we might find opportunities to partner with a business owner who will sell a portion of their company to us and using that capital to grow the business.
So where do we focus our attention from an industry perspective? Generally, first of all, we invest in companies that at least $3 million of consistent operating cash flow or what we generally refer to as earnings before interest, taxes, depreciation and amortization, EBITDA, and potential to expand that cash flow. Areas of interest, industry interest, to us are light and specialty manufacturing; specialty consumer products and services; industrial products and services; and from time to time, aerospace and energy. And we have no concentration, of course, at this time in those areas.
Looking into the activity of the fund for this past quarter, we are very pleased with what we did, and like I mentioned, that we invested $79.3 million in new deals and in an existing portfolio company. The third quarter, which ended December 31, 2014, was strong in originations as we invested $44 million in 2 new deals. In October, we purchased Old World Christmas through a combined debt and equity investment of $24.4 million. Old World Christmas, which is headquartered in Spokane, Washington, is the designer of an extensive collection of glass -- excuse me, blown glass Christmas ornaments, tabletop figurines, vintage-style light covers and nostalgic greeting cards, which are distributed primarily into the independent gift channel. In December, the second deal we did, we purchased B&T group through a combined debt and equity investment of $19.6 million. B&T is headquartered in Tulsa, Oklahoma, and it's a full service provider of structural engineering, construction and technical services to the wireless tower industry.
Looking forward on our potential investments and our pipeline, the goal is to continue to find opportunities that fit our investment parameters, which are cash-on-cash equity returns of at least 2x and yields on our debt investments in the mid-to-high teens. Again, emphasizing that interest on these debt investments will allow coverage of our distributions to shareholders. As demonstrated by the 2 new investments I mentioned, we are able to keep adding to our asset base. We have a positive origination trend going into our fourth quarter, which is ending March 31, 2015, as we are fairly close to executing on a few new investments. So we continue expanding our marketing efforts and growing our presence in the marketplace to support our activity in the pipeline for new investments. Now please keep in mind, and it's demonstrated by the past 2 quarters, that deal flow, of course, and the closings of those companies is erratic.
So in summary, our goal for this fund is to maximize distribution to shareholders, with solid growth in both equity and the income portion of our assets.
So this concludes my part of the presentation. I'd like to turn it over to our CFO and Treasurer, Melissa Morrison, to go into a bit more detail. Melissa?