Peter Kolchinsky

@PeterKolchinsky · Boston, MA · joined 21 May 2019

Managing Partner, RA Capital Management. We build & invest in biotech companies. Scientist. Author, The Great American Drug Deal. https://t.co/ARVLrrTQU4

64 584Followers

187Following

8 228Posts total

65KViews on collected posts

Latest posts

Peter Kolchinsky@PeterKolchinsky9 Sep

Great video but not a better substitute for insurance. Enrollment is optional so adverse selection would kill this unless they denied people with pre-existing conditions, which insurance can’t do today. As healthy people get sick, only works if more healthier sign. Aka ponzi. 10.8K views · 8 likes · 3 reposts · 5 replies Open on X →

Peter Kolchinsky@PeterKolchinsky9 Sep

If you or someone in your family has #celiac, post your response here to how often, out of ten different restaurants (incl DoorDash), a supposedly gluten-free meal is contaminated with gluten (to point where it causes symptoms). My answer below. 12.6K views · 26 likes · 7 reposts · 13 replies Open on X →

Peter Kolchinsky@PeterKolchinsky9 Sep

Board meeting season… some will be efficient & some will drag, sucking productivity/souls. Best practices: pre-read email plainly states what’s good/bad & purpose of meet, every slide has bottom line at top, elephant slide!!, 2h, start w/ exec sesh. https://t.co/ThHbcfFKBa 3.9K views · 18 likes · 2 reposts · 2 replies Open on X →

Peter Kolchinsky@PeterKolchinsky5 Sep

This is why AI/robots won’t lead to mass unemployment. While we have means to cheaply make useful things, people want special things. The future of work shifts to creative, authentic, personalized. Lots to do btw now & then. Eg make better medicines. https://t.co/g95gINOQr5 2.7K views · 12 likes · 1 reposts · 1 replies Open on X →

Peter Kolchinsky@PeterKolchinsky16 Nov 2024

Heartening to see such insight here on Twitter. Thank you David standing up for the people who do so much good yet who are among the most hated in America. It’s a paradox that needs resolving. The problems can be fixed; let’s not lose sight of the net good… ie this! 34.9K views · 77 likes · 3 reposts · 3 replies Open on X →

Against accounts of the same size

4 posts from the last 90 days, next to the 10K–100K follower range. shown widely, but few of those viewers react.

Median views7 374this account936median for 10K–100K

Reach, %11.42%this account3.43%median for 10K–100K

Engagement, %0.44%this account1.55%median for 10K–100K

Metric	This account	Median for 10K–100K	Ratio
Median views per post	7 374	936	7.88×
Reach (views ÷ followers)	11.42%	3.43%	3.33×
Engagement rate	0.44%	1.55%	0.28×

Others in this range → Compare with another account → How these benchmarks are built →

Growth & engagement

How the posts we collected actually performed: views and reaction rate post by post, what the audience did with them, and where the follower count goes.

Views per post

34.9K16 Nov

2.7K5 Sep

3.9K9 Sep

12.6K

10.8K

Last 5 collected posts, oldest on the left. The scale is logarithmic: one post can outrun the rest a hundred times over.

Engagement rate per post

0.24%16 Nov

0.51%5 Sep

0.56%9 Sep

0.36%

0.15%

Reactions — likes, reposts, replies and quotes — divided by views. Median for 10K–100K accounts is 1.55%.

What the audience does

Likes64.1%141 in total

Reposts7.3%16 in total

Replies10.9%24 in total

Bookmarks17.7%39 in total

Share of every reaction we collected for this account. Replies mean argument, reposts mean endorsement, bookmarks mean the post was worth keeping.

The follower curve appears once this account has two daily snapshots — we take one a day, and this one is on its first.

Latest posts

Against accounts of the same size

Growth & engagement

Views per post

Engagement rate per post

What the audience does

Similar accounts