If you follow the right investors on Twitter, you can gain a lot of insight into how they think, the types of startups they find most interesting, and markets that are ripe for disruption. 

PeekAnalytics, a social media analytics company, ranked the top tech investors on Twitter based on influence

PeekAnalytics did this using its PullQuotient metric.

"Influence, for the purposes of this calculation, is gauged by how well connected someone’s Twitter followers are not just on Twitter, but across sixty social sites, compared to the average consumer," the description on PeekAnalytics reads.

Note: PeekAnalytics last updated the list in February 2013.

20. Dick Costolo

Image credit: AP

Firm: Angel investor

Twitter: @dickc

Pull: 900x

Followers: 1,018,589

Average Network Size: 1,272

19. Fred Wilson

Image credit: Lachlan Hardy

Firm: Union Square Ventures

Twitter: @fredwilson

Pull: 906x

Followers: 413,986

Average Network Size: 1,928

18. Om Malik

Image credit: Flickr/jyri

Firm: True Ventures

Twitter: @om

Pull: 1,065x

Followers: 1,315,494

Average Network Size: 1,170

17. Richard Simmonds

Image credit: LinkedIn/Screenshot

Firm: Angel Investor

Twitter: @RichSimmondsZA

Pull: 1,066x

Followers: 132,849

Average Network Size: 6,287

16. Tim Ferris

Image credit: Jeff Kubina

Firm: Angel Investor

Twitter: @tferriss

Pull: 1,083x

Followers: 413,986

Average Network Size: 1,251

15. Chris Sacca

Image credit: Chris Sacca

Firm: Lowercase Capital

Twitter: @sacca

Pull: 1,089x

Followers: 1,401,888

Average Network Size: 1,037


Related: 23 Thought-Provoking Enterprise Tech Execs That Smart People Are Following On Twitter

14. Jeff Pulver

Image credit: flickr/joi

Firm: Hafooch Investments

Twitter: @jeffpulver

Pull: 1,101x

Followers: 492,648

Average Network Size: 2,377

13. Jason Calacanis

Firm: Angel Investor

Twitter: @jason

Pull: 1,173x

Followers: 154,193

Average Network Size: 3,093

12. Mark Cuban

Image credit: Business Insider / Matthew Lynley

Firm: Angel Investor

Twitter: @mcuban

Pull: 1,466x

Followers: 1,303,074

Average Network Size: 685

11. Tim O'Reilly

Image credit: Guardian

Firm: O'Reilly AlphaTech Ventures

Twitter: @timoreilly

Pull: 1,496x

Followers: 1,625,326

Average Network Size: 1,051

10. Gary Vaynerchuk

Image credit: Flickr/Silicon Prairie News

Firm: Angel Investor

Twitter: @garyvee

Pull: 1,572x

Followers: 985,812

Average Network Size: 1,402


Related: Why Y Combinator Is The Hottest Startup School In Silicon Valley

9. Kevin Rose

Image credit: Flickr / Joi

Firm: Google Ventures

Twitter: @kevinrose

Pull: 1,635x

Followers: 1,381,642

Average Network Size: 1,033

8. Al Gore

Image credit: Current TV

Firm: Generation Investment Management

Twitter: @algore

Pull: 1,779x

Followers: 2,529,

Average Network Size: 646

7. Jonah Lupton

Image credit: Parabolic Ventures

Firm: Parabolic Ventures

Twitter: @JonahLupton

Pull: 1,805x

Followers: 595,152

Average Network Size: 938

6. Evan Williams

Evan Williams, founder of Blogger.

Image credit: Joi Ito via Flickr

Firm: The Obvious Corporation

Twitter: @ev

Pull: 1,932x

Followers: 1,620,217

Average Network Size: 1,073

5. Biz Stone

Firm: The Obvious Corporation 

Twitter: @biz

Pull: 2,139x

Followers: 1,984,595

Average Network Size: 1,115


Related: A Startup Entrepreneur Wrote A Brutal Open Letter To 'Dumb' VCs

4. Jack Dorsey

Image credit: Vivian Giang / Business Insider

Firm: Angel investor

Twitter: @jack

Pull: 2,139x

Followers: 2,311,789

Average Network Size: 643

3. Richard Branson

Image credit: richardbranson via YouTube

Firm: Virgin Investments

Twitter: @richardbranson

Pull: 2,567x

Followers: 2,571,412

Average Network Size: 643

2. Guy Kawasaki

Image credit: Idea Champions

Firm: Garage Technology Ventures

Twitter: @GuyKawasaki

Pull: 2,867x

Followers: 1,288,913

Average Network Size: 2,294

1. Ashton Kutcher

Firm: Angel Investor

Twitter: @aplusk

Pull: 4,697x 

Followers: 14,256,594

Average Network Size: 356

This story originally appeared on Business Insider