Earlier this year when pulling together the data for our 2019 Optimizing Legal Information Pricing book, we noticed a trend across our AmLaw 200 segment. Some of our most impactful dimensions – Market Power, Penetration, and Importance--resulted in a nearly identical “Top 4” ranking among Lexis and Westlaw ancillary products, 3 of which fall to Lexis currently (Law360, ALM, NYTimes/WSJ) and just one (Practical Law) under Westlaw. Only in the importance ranking does Intelligize bump the NYTimes/WSJ Lexis ancillary product out of the top 4.
Take a look at the details of the top-ten products in our charts below:



As vendors drive tougher bundling packages, particularly for Lexis, the stickiness of the ancillary products is proving to be a key factor in retention.