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Vertex Pharmaceuticals engagement report

@VertexPharma - 70K followers on X

Measured over 1 original post from a 30-day window, last computed on September 16, 2026.

Engagement

Per follower
0.011%
of 70K followers
Per impression
0.568%
1.4K views on a typical post
Reach
2.01%
of its followers see a post
Typical post
8
interactions (median)
Saved
0%
0 bookmarks on a typical post
Posting rate
0.03/day
active 3% of days
Peak time
13:00 UTC
Wednesday

Early reading. We have captured 1 original post for this account, below the 8 we require before treating a median as settled. The numbers above describe what we have seen so far, not a finished profile of the account.

A typical post picks up 8 interactions against 70K followers, an engagement rate of 0.011%. Posts are seen about 1.4K times each, and 0.568% of those impressions turn into an interaction. That is about 2.02% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 0.03 posts a day over the last 30 days, though only 3% of days saw any activity at all. Most posts go out around 13:00 UTC, and Wednesday is the busiest day of the week. Of the 1 posts sampled, 100% carry an image or video. The account's strongest tracked post pulled 174 interactions, about 22x its own typical post. Recurring topics include #cysticfibrosis, #latvia. Only 1 original post have been captured so far, fewer than the 8 posts we want behind a median before treating it as settled. Read the figures above as an early measurement of this account, not as a finished profile of it.

Measured over 1 original post from a 30-day window, last computed on September 16, 2026. Recurring tags: #cysticfibrosis, #latvia.

Where this sits in the catalog

At 0.011%, Vertex Pharmaceuticals sits above the 10th percentile of the 213,186 accounts in this comparison. That places it in the bottom 25% band, which runs below 0.025%.

p100.004%
p250.025%
p50 (median)0.147%
p750.698%
p902.61%
p9982.9%
Engagement rate as a share of followers, across the 213,186 accounts we have scanned enough to measure. The axis is logarithmic, because the top and bottom of this population are about 22,400 times apart and a linear axis would flatten everything below the median into a single point.
Show the percentile table
Engagement rate percentiles
PercentileEngagement rate
10th percentile0.004%
25th percentile0.025%
50th percentile0.147%
75th percentile0.698%
90th percentile2.61%
99th percentile82.9%

This ruler is the whole measured catalog, not a size-matched group: it shows where the raw rate falls across every account we can measure, all of which are large. For a like-for-like comparison, read the size-band percentile above instead. See how the bands are built

Posting timing

This account posts most often around 13:00 UTC, and Wednesday is its busiest day of the week. The bars below are the catalog-wide pattern, with this account's own busiest slot marked. They do not show how this account performs at each hour: we keep one aggregate per account, not one per hour, so that measurement does not exist in our data.

Engagement by hour posted, UTCTwenty-four bars, one per UTC hour. Each bar shows how posts published in that hour compare with their own authors' median engagement. Bars above the centre line ran higher than the median, bars below ran lower. A marker flags Busiest hour: 13:00 UTC.
0003060912151821
Above the authors' own mediansBelowScale: plus or minus 111%Busiest hour: 13:00 UTC
Show engagement by hour posted, utc as a table
Engagement by hour posted, UTC
Hour (UTC)Vs author medianPosts
00:00 UTC-1%89K
01:00 UTC-2%90K
02:00 UTC-3%88K
03:00 UTC-4%94K
04:00 UTC-5%76K
05:00 UTC-4%75K
06:00 UTC-5%86K
07:00 UTC-5%93K
08:00 UTC-4%108K
09:00 UTC-4%124K
10:00 UTC-3%129K
11:00 UTC-3%141K
12:00 UTC-3%154K
13:00 UTC-3%167K
14:00 UTC-4%173K
15:00 UTC-2%176K
16:00 UTC-3%171K
17:00 UTC-3%159K
18:00 UTC-2%149K
19:00 UTC-2%141K
20:00 UTC-1%131K
21:00 UTC0%116K
22:00 UTC-2%100K
23:00 UTC-1%90K
Engagement by day of weekSeven bars, one per weekday, Sunday first. Each bar shows how posts published on that day compare with their own authors' median engagement. Bars above the centre line ran higher than the median, bars below ran lower. A marker flags Busiest day: Wednesday.
SunMonTueWedThuFriSat
Above the authors' own mediansBelowScale: plus or minus 111%Busiest day: Wednesday
Show engagement by day of week as a table
Engagement by day of week
DayVs author medianPosts
Sunday+5%393K
Monday+1%483K
Tuesday-2%520K
Wednesday-3%472K
Thursday-2%430K
Friday-3%447K
Saturday+2%393K
See what moves engagement across the whole catalogWhat counts as a good engagement rate at this size

Formats this account uses

Its own posting mix on the left, and what each of those formats does across every account we track on the right. Only formats where the effect clears our publish test appear here, so an empty row is a format we could not measure rather than one that does nothing.

This account's posting mix compared with catalog-wide effects
FormatThis accountCatalog effect95% intervalAccounts behind it
Image or video100% of posts+111%+108% to +115%34K
Outbound link0% of posts-41%-42% to -40%32K
Typical length-no effect-2% to -1%42K
  • 100% of this account's sampled posts carry an image or video. Across the catalog, posts with an image or video run 111% above the same accounts' other posts.
  • 0% of its posts carry a link off X. Across the catalog, posts with an outbound link run 41% below the same accounts' other posts.
  • Its average post runs 250 characters, which falls in the 180 - 280 characters band. Across the catalog, posts of 180 to 280 characters match the same accounts' other posts almost exactly.

These are catalog-wide differences applied to this account's own posting mix, not a measurement of how each format performs for this account specifically. We keep one median per account, not one per format per account, so the second thing is not something this data can tell you.

Best tweets

  • Jan 30, 202522x their median

    #Breaking: The U.S. FDA approves our treatment for moderate-to-severe acute pain in adults. This is the first new class of pain medicine to be approved in over 20 years. Learn more: https://t.co/IYyQfafiBE https://t.co/ueMmOVA3I1

    10430281215K viewsView on X
  • Jun 20, 202517x their median

    #Breaking: Today we announced updated data for our investigational islet cell therapy for the treatment of #Type1Diabetes. Learn more: https://t.co/eFaGhJIcDU https://t.co/7x2sIf6HaP

    97285598K viewsView on X
  • Dec 20, 20248.5x their median

    #Breaking: The U.S. FDA has approved our newest treatment for cystic fibrosis. Learn more: https://t.co/FPTRktdjYb https://t.co/UeStYtKotK

    4813436.0K viewsView on X
  • Jun 20, 20258.3x their median

    We are excited to share that data for our investigational stem cell-derived, fully differentiated islet cell therapy for #Type1Diabetes were published in @NEJM. Learn more: https://t.co/ttKpwaR7vY https://t.co/DFmdxSbFyy

    557314.8K viewsView on X
  • Jul 22, 20256.8x their median

    #Breaking: Today Health Canada granted marketing authorization for our fifth cystic fibrosis (CF) medicine. https://t.co/fKmatUJUVi

    2842204.0K viewsView on X
  • Jul 30, 20246.6x their median

    We are excited to share that the FDA has accepted and granted priority review to the New Drug Application (NDA) submission for our investigational acute pain medicine. Learn more: https://t.co/5c7c8Hh87k https://t.co/DuGPA7ZKG0

    445404.5K viewsView on X
  • Jul 14, 20256.0x their median

    We are proud to announce that our acute pain medicine has been recognized as a 2025 Breakthroughs Innovation Celebration winner by @PremierHA, a leading healthcare improvement company. Learn more: https://t.co/E8TlYTLnD1 https://t.co/qXB6mBVc6l

    3141303.8K viewsView on X
  • Jul 1, 20255.8x their median

    Today the European Commission approved our fifth cystic fibrosis (CF) medicine. This marks an important step towards our goal of treating all people with CF. https://t.co/DulGPO5j06

    375313.9K viewsView on X
  • Feb 28, 20255.3x their median

    Today the European Medicines Agency’s (EMA) Committee for Medicinal Products for Human Use (CHMP) adopted a positive opinion for the label expansion of our fourth cystic fibrosis (CF) medicine to include an expanded population with certain mutations. This marks an important step towards our goal of treating all people with CF.

    317404.7K viewsView on X
  • Apr 28, 20255.0x their median

    Today the European Medicines Agency’s (EMA) Committee for Medicinal Products for Human Use (CHMP) adopted a positive opinion for our fifth cystic fibrosis (CF) medicine. This is an important step towards our goal of treating all people living with CF. https://t.co/hwqq96OUkS

    308113.5K viewsView on X

Ranked by total interactions across everything we have tracked for this account, which is a longer history than the 30-day window the rates above use. The multiple compares each post to this account's own median.

Recurring topics

#cysticfibrosis#latvia

The most frequent hashtags in the sampled posts. They describe what this account writes about; they are not a performance signal, and the catalog-wide breakdown on the hub shows how little hashtag count moves.

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Reading these numbers

A typical post picks up 8 interactions against 70K followers, an engagement rate of 0.011%. Posts are seen about 1.4K times each, and 0.568% of those impressions turn into an interaction. That is about 2.02% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 0.03 posts a day over the last 30 days, though only 3% of days saw any activity at all. Most posts go out around 13:00 UTC, and Wednesday is the busiest day of the week. Of the 1 posts sampled, 100% carry an image or video. The account's strongest tracked post pulled 174 interactions, about 22x its own typical post. Recurring topics include #cysticfibrosis, #latvia. Only 1 original post have been captured so far, fewer than the 8 posts we want behind a median before treating it as settled. Read the figures above as an early measurement of this account, not as a finished profile of it.

What is Vertex Pharmaceuticals's engagement rate on X?
Vertex Pharmaceuticals (@VertexPharma) has an engagement rate of 0.011%, based on the median interactions across 1 original posts from the last 30 days against 69,856 followers. Replies, reposts and quote-posts of other people are excluded from that sample.
Is that a good engagement rate?
At 0.011%, Vertex Pharmaceuticals sits above the 10th percentile of the 213,186 accounts in this comparison. Those comparison accounts are all large ones, because our scanning cadence is weighted towards big accounts, so this is a ranking among peers of similar scale rather than a ranking across X.
Does @VertexPharma have real engagement?
There is not yet enough sample to rank this account against others of its size.
When does @VertexPharma post?
Most posts go out around 13:00 UTC, and Wednesday is its busiest day, at roughly 0.03 posts per day across the measured window.

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