Just a week ago I wrote about how many key private equity players were worried about a bubble. The New York Times reported this morning that several banks were cooling on lending to private equity firms to fund buyouts. RBS admitted there are signs that the market is "quite toppish." Mezzanine lender Intermediate Capital also warned that deals were becoming more risky. The warning from Intermediate Capital is not good news considering the fact that they may well be the largest lender to private equity firms. Of course when you are talking about billion dollar deals, banks don't work alone. Usually banks form large syndicates in order to spread the risk around. Be that as it may, as more and more banks become more careful with the risk they take on, they may well pull the punch bowl from the party. I have a feeling that until their is a dramatic default the boom still has some legs.
In the past week investors have punished Merrill Lynch for its role in providing bridge loans for large private equity deals, like the $32 billion deal for First Data. While I am prone to worry about the potential for a deal to blow-up an leave banks and investors up a creek, some, including Dana Cimilluca at the WSJ think that all the words of caution from private equity players and banks alike may actually be a good sign for the M&A boom to continue:
"As we see it, the Merrill scare is a brick in the wall of worry the private-equity industry seems to be facing these days. One executive after another — many of them participants in the buyout boom — is sounding alarm bells about a bubble. The latest is Royal Bank of Scotland CEO Fred Goodwin, who says the private equity market is getting "quite toppish". His comments echo remarks recently from Bank of America chief Ken Lewis. Moody’s Investors Service in a note today questions whether a march upward in long term interest rates could slow the debt issuance behind the buyout and stock repurchase booms. (It doesn’t think so.)
What does this all mean for the big question everyone is asking — how much longer the good times in the deal world will last? Investment types often refer to a chorus of caution as a bullish sign, in part because it keeps investor behavior from becoming too irresponsible. If that’s the case, it could perversely mean the M&A frenzy still has some legs."
While Dana thinks the caution is a good sign, I disagree. As private equity firms and lenders start to wise up to the risks, the cost of debt rises and many of these deals start to crumble. If one major deal falls through it could send an ice cold tremor through the market putting in peril all the other deals that are in the pipeline and crushing the holders of bridge loans that were hoping that their debt would quickly be replaced with junk.
There is one concrete graph to look at that may point to why banks are starting to sour on the deals presented to them. I wrote about this last week as well. That is the rise in the yield of the 10-year treasury. Just last week the yield curve normalized and the 10-year yield is now moving aggressively towards 5% (see graph below/ click to enlarge).

**One last note. Insofar as the rise in the markets this year has been fueled by all the M&A activity, if lending tightens up and the deals slow down the market may well correct sharply. In fact a major credit event could finally restore the volatility to markets that many have been calling for.