Seeing bubbles. Photographer: Scott Eells/Bloomberg
Seeing bubbles. Photographer: Scott Eells/Bloomberg

Earlier this week, Greenlight Capital Inc. hedge-fund manager David Einhorn reignited the bubble arguments that we have spilled so many pixels dissecting. The short-seller of Lehman Brothers Holdings Inc. and New York Mets fan said in a quarterly letter to clients "we are witnessing our second tech bubble in 15 years."

The bubble chatter is nothing new. Regular readers know this has been an issue I enjoy exploring. Indeed, it has been accompanying the current bull market since it lifted off five years ago. Back in 2011, I even created a checklist of “How to Spot a Bubble in Real Time.” More recently, in November I noted we seemingly have a “Bubble in Bubbles.”

There certainly are many anecdotal indications of froth. Secondary share issues have increased. Facebook Inc. co-founder Mark Zuckerberg has made some questionable acquisitions at what looks like absurd valuations. We see individual investors slowly coming back into the market. Both TD Ameritrade and E*Trade Report had 30 percent jumps in trading in the first quarter; Charles Schwab Corp. had a 13 percent increase.

However, as the Wall Street Journal noted, “While market volume tends to rise over time, it was down 35% in 2013 from a peak of 1.947 trillion shares reached in 2009.”

Let’s look at Einhorn’s bubble indicators to see if things have gotten out of hand. The three indicators he listed are:

• The rejection of conventional valuation methods.

• Short-sellers forced to cover due to intolerable losses.

• Huge first-day pops for initial public offerings by companies that have done little more than use the right buzzwords and attract the right venture capital.

Is this an “echo” as Einhorn described it of our previous bubble? Do valuation methods, short covering and IPO pops confirm a bubble?

The answer is, no.

Let’s use Einhorn’s own metrics to see if there is truly a tech bubble rumbling through the Nasdaq these days.

Earlier this month in ``Do You See a Bubble?,'' we looked at IPO volume and first-day gains as potential signs of a tech bubble. The takeaway was that the first quarter of this year was nothing like the bad old days of late 1999 or early 2000. Have a look at the metrics we listed, and it's hard to conclude that IPOs today are in bubble territory. The numbers simply are not there.

Next, let’s consider the issue of short selling stocks, a strategy from which Einhorn has profited in the past. If you are looking for some short bashing, you’ve come to the wrong place. I have long argued that shorts are the traders who keep the market honest, root out fraud and corruption, and generally help maintain a reality check when things get goofy.

However, that doesn't mean they are infallible. Just because short-sellers are forced to cover with big losses doesn't automatically mean it is a bubble. Any kind of bull market will do the same thing. Keep in mind the current rally followed an immense plunge during the financial crisis. As of mid-2013, more than four years later, markets only recovered to pre-crash highs. That sort of reversion to the mean wreaks havoc on a short seller’s profit and loss.

IPOs and short losses are not indicative of a bubble. But what about the granddaddy of bubble indicators: Valuation?

Here is a chart of trailing four-quarter price-earnings rations of the companies in the Nasdaq 100 Stock Index. It speaks for itself:

Source: Bloomberg
Source: Bloomberg

Now let's look at the more speculative Dow Jones Internet Composite Index.

Source: Bloomberg
Source: Bloomberg

Yes, a P/E of 76 sounds high, but it's about what it has been for the past decade. And it is nowhere near the insanity of the P/E of almost 2,000 in late 1999.

David Einhorn is a very astute trader and an insightful fund manager. He is a smart guy, and I only rarely find myself in disagreement with him. But when it comes to the declaration of an echo tech bubble, I am on the other side of the argument.

Previously:

Bull or Bubble?: http://www.bloombergview.com/articles/2013-12-05/bull-or-bubble-ritholtz-chart-

The Stages of Bubble Mania: http://www.bloombergview.com/articles/2014-03-18/the-stages-of-bubble-mania-ritholtz-chart

Tech Stocks in Retreat: http://www.bloombergview.com/articles/2014-04-07/tech-stocks-in-retreat

To contact the author of this article: Barry Ritholtz at britholtz3@bloomberg.net.

To contact the editor responsible for this article: James Greiff at jgreiff@bloomberg.net.