Investor AB

Investor AB as of March 31, 2011

Portfolio Holdings for Investor AB

Investor AB holds 27 positions in its portfolio as reported in the March 2011 quarterly 13F filing

Company (Ticker) Portfolio Weight Valued At Change in Shares Share Count Share Price
Nasdaq Omx (NDAQ) 70.5 $465M 18M 25.84
ChinaCache International Holdings 9.6 $64M 3.5M 18.23
Constant Contact 2.2 $15M 421k 34.90
ISTA Pharmaceuticals 1.8 $12M 1.2M 10.12
Dresser-Rand 1.6 $11M 201k 53.62
D.R. Horton (DHI) 1.3 $8.7M 750k 11.65
Bank of America Corporation (BAC) 1.3 $8.7M 650k 13.33
Dell 1.2 $8.0M 550k 14.51
Microsoft Corporation (MSFT) 1.1 $7.6M 300k 25.39
McDonald's Corporation (MCD) 0.9 $6.1M 80k 76.09
Vulcan Materials Company (VMC) 0.9 $5.9M 130k 45.60
Achillion Pharmaceuticals 0.9 $5.9M 821k 7.15
AK Steel Holding Corporation 0.8 $5.5M 350k 15.78
Morgan Stanley (MS) 0.8 $5.5M 200k 27.32
MetroPCS Communications 0.8 $5.3M 326k 16.24
Kennametal (KMT) 0.7 $4.7M 120k 39.00
Lear Corporation (LEA) 0.6 $3.9M 80k 48.88
Republic Airways Holdings 0.5 $3.4M 535k 6.43
Marvell Technology Group 0.5 $3.1M 200k 15.55
AmerisourceBergen (COR) 0.5 $3.0M 75k 39.56
Delta Air Lines (DAL) 0.5 $2.9M 300k 9.80
NYSE Euronext 0.3 $1.8M 50k 35.18
Medtronic 0.2 $1.5M 38k 39.34
Medco Health Solutions 0.2 $1.3M 23k 56.17
Whirlpool Corporation (WHR) 0.1 $854k 10k 85.40
Corcept Therapeutics Incorporated (CORT) 0.1 $425k 100k 4.25
Key (KEY) 0.0 $222k 25k 8.88