Last week we showed a fascinating statistic demonstrating just how poor market breadth has been in the latest push higher by the S&P: according to Goldman, as of May 10, just 10 companies have been responsible for half, or 46% to be exact, of the entire S&P's rally YTD. 

And with the 13-F reporting period now over, we now know the reason why just six tech stocks were reponsible for the majority of the S&P's upward surprise YTD - virtually every prominent hedge fund piled into them. The breakdown presented below, courtesy of Bloomberg, reveals just how urgent the scramble for "growth" was in the first quarter.

As Bloomberg adds, with an average gain of 26% , "it’s hard to overstate the influence of just six stocks on the U.S. stock market in the first quarter: Facebook Inc., Apple Inc., Amazon.com Inc., Microsoft Corp., Alphabet Inc. and Netflix Inc."

Here’s where some of the best-known hedge funds stood on the companies according to filings covering positions on March 31.

Facebook (FB)

Top new buy:

• Corvex (+850,000)

Boosted stake:

• Adage (+822,100)
• Citadel (+4,289,917)
• Lansdowne (+899,846)
• Melvin (+963,021)
• Moore (+850,492)
• Omega (+194,100)
• Point72 (+2,020,400)
• Pointstate (+2,564,100)
• Renaissance Tech (+2,141,800)
• Ruane Cunniff (+300,000)
• Soros (+284,400)
• Tiger (+338,396)

Cut stake:

• Sylebra (-358,944)

Top exit:

• Airain (-229,332)

* * *

Apple (AAPL)

Top new buy:

• Moore (+255,000)

Boosted stake

• Adage (+140,600)
• Berkshire (+75,881,454)

* * *

Amazon (AMZN)

Top new buy:

• Melvin (+251,084)
• Moore (+58,183)
• Renaissance (+329,255)

Boosted stake:

• Lansdowne (+35,525)
• Pointstate (+265,878)

Cut stake:

• Viking (-535,762)

Top exit:

• Soros (-28,100)

* * *

Microsoft (MSFT)

Top new buy:

• Moore (+1,190,000)

Boosted stake:

• Pointstate (+2,758,200)
• Viking (+7,068,972)

Top exit:

• Renaissance Technologies (-2,368,100)

* * *

Alphabet (GOOGL)

Boosted stake:

• Moore (+47,860)
• Omega (+19,440)
• Pointstate (+267,500)

Cut stake:

• Lansdowne (-99,638)
• Tiger Global Management (-97,750 and -67,800 GOOG)
• Viking (-388,219 and -4,017 GOOG)

Top exit:

• Airain (+14,612 and -12,577 GOOG)
• Soros (+1,300 and -20,200 GOOG)

* * *

Netflix (NFLX)

Top new buy:

• Omega (+77,700)
• Lansdowne (+30,164)
• Tiger (+429,000)

Boosted stake:

• Tybourne (+590,966)

Cut stake:

• Melvin (-175,000)
• Viking (-556,280)

Source: Bloomberg