 | Boston Scientific | BSX
| $8,357,000,000 | 28,600 | 40 | | |
 | BD Medical | BDX
| $6,359,710,000 | 28,018 | 600 | | |
 | Brooks Automation, Inc | BRKS
| $743,260,000 | 1,900 | 50 | | |
 | Blue Coat Systems, Inc | BCSI
| $177,700,000 | 708 | 25 | | |
 | Backcountry.com, Inc | | $82,000,000 | 350 | 0 | | |
 | Bard Access Systems, Inc. | | $45,000,000 | 250 | 250 | | |
 | Big Planet, Inc | NUS
| $30,000,000 | 100 | 100 | | |
 | Burton Group | | $17,500,000 | 25 | 25 | | |
 | BC Technical, Inc. | | $15,000,000 | 30 | 30 | | |
 | Broadcast International, Inc | | $15,000,000 | 25 | 25 | | |
| Link | Bridge Technologies | | $9,000,000 | 25 | 25 | | |
| Link | Bright Builders | | $6,000,000 | 50 | 50 | | |
| Link | Berkeley Data Systems, Inc. | | $5,000,000 | 75 | 75 | $2,000,000 | |
| Link | BMA Management Support Corp | | $4,000,000 | 50 | 50 | | |
 | BuilderFusion, Inc. | | $3,200,000 | 37 | 37 | $1,250,000 | |
| Link | Bountiful WiFi | | $1,500,000 | 10 | 10 | | |
| Link | BioMicro Systems, Inc | | $1,000,000 | 20 | 20 | | |
| Link | Beachhead LLC | | | 0 | 0 | | |
| Link | Belatrix Software Factory | | | 0 | 0 | | |
| Link | Bourns, Inc | | | 4,000 | 50 | | |
 | Bungee Labs | | | 25 | 25 | | |
 | Browz | | | | | | |
| Link | bigcartel | | | | | | |
| Link | BioMeridian | | | | | | |
| Link | Bluehost | | | | 100 | | |
| Link | BroadBand Solutions | | | | | | |
| Link | Bunnel | | | | | | |
| Link | Blueroof 360 | | | 5 | 5 | | |
| Link | BroadWeave Networks | | | | | | |
|