Despite more Israeli startups turning into mega companies, many sell for increasing large valuations. In the first half of 2019, there were 66 exits totaling $14.48 billion, the highest in 5 years. Even without the $6.9 billion Mellanox exit, it was a billion dollars more than the same period in 2018.
https://en.globes.co.il/en/article-ivc-meitar-israeli-exits-totalled-145b-in-h1-2019-1001292173
https://www.israel21c.org/israeli-firms-earn-14-48b-in-66-exit-deals-in-h1-of-2019/