Peter Kostis engagement report
@peterjkostis - 5.1M followers on X
Measured over 13 original posts from a 30-day window, last computed on October 7, 2026.
Engagement
A typical post picks up 129 interactions against 5.1M followers, an engagement rate of 0.003%. Measured over 13 original posts, its engagement rate beats 20% of 15,519 tracked accounts of a similar size. That is a reason to look at how the audience behaves - reply depth, saves, whether the followers are recent - rather than a conclusion about it on its own. Posts are seen about 111K times each, and 0.117% of those impressions turn into an interaction. That is about 2.18% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 3.2 posts a day over the last 30 days, with activity on roughly 77% of days. Most posts go out around 09:00 UTC, and Tuesday is the busiest day of the week. Of the 13 posts sampled, 46% carry an image or video and 69% link out. The account's strongest tracked post pulled 58K interactions, about 694x its own typical post. Recurring topics include #dcvax, #dcvaxforbraelyn, #gbm.
Measured over 13 original posts from a 30-day window, last computed on October 7, 2026. Recurring tags: #dcvax, #dcvaxforbraelyn, #gbm.
Compared with accounts its own size
Peter Kostis's engagement rate beats 20% of the tracked X accounts closest to it in follower count (15,519 accounts, accounts of similar size (decile 10 of 10)). A percentile is spread evenly by construction, so 50 really is the middle of that group and 90 really is its top tenth.
On engagement per impression rather than per follower it beats 9% of the same group. When those two numbers disagree, the gap is about how far its posts travel rather than how people react to them.
Where this sits in the catalog
At 0.003%, Peter Kostis sits below the 10th percentile of the 155,411 accounts in this comparison. That places it in the bottom 25% band, which runs below 0.022%.
Show the percentile table
| Percentile | Engagement rate |
|---|---|
| 10th percentile | 0.003% |
| 25th percentile | 0.022% |
| 50th percentile | 0.127% |
| 75th percentile | 0.603% |
| 90th percentile | 2.31% |
| 99th percentile | 83.6% |
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 09:00 UTC, and Tuesday 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.
Show engagement by hour posted, utc as a table
| Hour (UTC) | Vs author median | Posts |
|---|---|---|
| 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 UTC | 0% | 116K |
| 22:00 UTC | -2% | 100K |
| 23:00 UTC | -1% | 90K |
Show engagement by day of week as a table
| Day | Vs author median | Posts |
|---|---|---|
| Sunday | +5% | 393K |
| Monday | +1% | 483K |
| Tuesday | -2% | 520K |
| Wednesday | -3% | 472K |
| Thursday | -2% | 430K |
| Friday | -3% | 447K |
| Saturday | +2% | 393K |
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.
| Format | This account | Catalog effect | 95% interval | Accounts behind it |
|---|---|---|---|---|
| Image or video | 46% of posts | +111% | +108% to +115% | 34K |
| Outbound link | 69% of posts | -41% | -42% to -40% | 32K |
| Typical length | - | +15% | +14% to +16% | 32K |
- 46% 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.
- 69% of its posts carry a link off X. Across the catalog, posts with an outbound link run 41% below the same accounts' other posts, so a large share of this account's output sits in the weakest bucket we measure.
- Its average post runs 2095 characters, which falls in the over 280 characters band. Across the catalog, posts over 280 characters run 15% above the same accounts' other posts.
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
- Apr 26, 2026694x their median
🚨 Brit Hume drops hard truth: “The Democratic Party has drifted farther to the left than I’ve ever seen. They are out where the buses don’t run.” “Conservatives tend to be proud to be Americans, no matter who is in office. But liberals in this country have gone sour on America. They’ve given up on America. They’re rooting against America.” A party infected with radical, anti-American ideology. Democrats can’t even say America is great when their own team is in charge. #BritHume #Democrats #AmericaFirst
- Jul 2, 2026252x their median
I can't stop listening to this song. Best thing that came out of the World cup being in the United States this year. 🇺🇸 Watching this compilation of fans from all over the world at the 2026 World Cup in America is so heartwarming. USA USA USA 🇺🇸https://t.co/mwAWzAKcsg
- Jul 17, 202673x their median
Seriously? @GolfChannel ? Why should a player "graciously" accept a penalty that they honestly feel that they didn't deserve? If someone shows me a DEFINITIVE camera angle that showed his swing path was improved then there should be a penalty. But for a commentator to state that he definitely did improve his situation is , in my opinion, more about their personal opinion of Bryson than the facts. There is no down the line video that I have seen.
- Jul 17, 202654x their median
In my opinion, with the depth of field issues with TV cameras and no definitive camera angles of his swing path, there cannot be conclusive video evidence that Bryson improved his lie or swing path. In cases like this the benefit of doubt should go to the player. I don't like this decision.
- Aug 20, 202627x their median
Imagine buying Moderna $MRNA after it's gone up 160%, not knowing that: 1. The first person in the world who took Moderna's mRNA-4157 Cancer vaccine outside of Clinical Trials died recently with no improvement - he was a jabbed Australian Cancer Researcher (@ProfRAScolyer) 2. Moderna's mRNA Cancer Vaccine is actually 18 to 27 injections (Phase 2 had 27 injections, Phase 3 had 18) 3. Moderna's mRNA Cancer Vaccine has an upto 36% severe side effect rate (Grade 3+) 4. Moderna didn't actually give us any results of their Phase 3 INTerpath-001 Trial and Phase 2 results were underwhelming at best 5. Merck actually takes 50% of the profit of every Moderna mRNA Cancer Vaccine sold 😂 This was a Big Pharma bot driven news day with no substance whatsoever. If you bought low, this was an excellent dead cat bounce as far as a stock move is concerned, but that's all this is. There is no "cure for cancer" here, sorry to say 🙄
- Mar 21, 202611x their median
The CBS studio for March Madness is embarrassing. Well done CBS Sports management.
- May 17, 202625x their median
For obvious reasons, I choose to not comment on golf announcing but I'm making an exception. Doing just a couple of events a year is, in itself, quite difficult but @david59duval impressed me this week. In an age where many announcers are either scripted or tend to do radio and tell you what you just saw, David did a very good job of letting the pictures tell you "what" and he explained the "why". Well done sir.....
- Sep 27, 20268.3x their median
This is an observation and not intended to be seen as an excuse because I detest excuses. However, it is my opinion since the PGA Tour invented the Presidents Cup, having a "team event" every year has been problematic. US players are expected to play every year while their opponents get a year off and 2 years to build up excitement and emotion for the competition. Same goes for the fans. I get it. The PGA Tour has no ownership of The Ryder Cup while the European tour does. So the Tour creates the PC and owns the whole thing. Neither team this year put forth the best US players or the best international players. They put forth the best players who are members of the PGA Tour. Professional golf needs to get its act together and provide the fans with a good entertaining product. To me, that means best against the best and not every week or every year because that waters down the anticipation and excitement for everyone.
- Jul 12, 20262.8x their median
📣📣JUDGE IN NWBO MAKES KEY ALGORITHMIC DATA DISCOVERABLE This is a very important win for Northwest Biotherapeutic NWBO. Algorithmic data proves the intent to harm the company and shareholders. They want you to believe it is just a market happenstance caused by the wider market instead of a coordinated planned attack. We are finally seeing Judges allowing discovery. In the MMTLP bankruptcy case, the Judge has also ordered discovery. Firms like Citadel Securities and Virtu Financial are named in many cases, accused of market manipulation. Their high paid attorney's are not being successful at getting these cases dismissed and the crime to go undiscovered. MAYBE THE TIDES ARE TURNING 🙏🙏
- Jun 17, 20266.3x their median
Jack Nicklaus' steel driver shaft was approximately 130 grams in weight (roughly double what is used today) and he had to tip it to make it stiff enough to handle his swing speed. That weight limited the club in length because the club would be too heavy to swing at a longer length. Average height of tour players back then was well under 6 ft. As shafts became lighter and especially, stiffer they could be lengthened and that opened the game to taller, bigger, stronger and more athletic players. Today's tour players average well over 6 ft. tall. I'm not convinced the game needs changes but assuming it does, regulating shaft weights and stiffness would certainly slow down club speed. Golf shafts are already bifurcated in the sense that amateur golfers almost never play a "tour shaft" in terms of flex and weight. I can assure you that players would not be pursuing 125MPH of club head speed with a heavier shaft that was soft enough to make timing and rhythm more important. This is a complicated problem that does not have a "simple" solution like changing the ball.
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
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 129 interactions against 5.1M followers, an engagement rate of 0.003%. Measured over 13 original posts, its engagement rate beats 20% of 15,519 tracked accounts of a similar size. That is a reason to look at how the audience behaves - reply depth, saves, whether the followers are recent - rather than a conclusion about it on its own. Posts are seen about 111K times each, and 0.117% of those impressions turn into an interaction. That is about 2.18% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 3.2 posts a day over the last 30 days, with activity on roughly 77% of days. Most posts go out around 09:00 UTC, and Tuesday is the busiest day of the week. Of the 13 posts sampled, 46% carry an image or video and 69% link out. The account's strongest tracked post pulled 58K interactions, about 694x its own typical post. Recurring topics include #dcvax, #dcvaxforbraelyn, #gbm.
- What is Peter Kostis's engagement rate on X?
- Peter Kostis (@peterjkostis) has an engagement rate of 0.003%, based on the median interactions across 13 original posts from the last 30 days against 5,073,391 followers. Replies, reposts and quote-posts of other people are excluded from that sample.
- Is that a good engagement rate?
- At 0.003%, Peter Kostis sits below the 10th percentile of the 155,411 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 @peterjkostis have real engagement?
- Its engagement rate beats 20% of the tracked X accounts closest to it in follower count (15,519 accounts), which puts it in the bottom quarter for its size group. Ranking inside a size band matters because engagement rate falls as accounts grow, so a raw rate would mostly re-measure the follower count. It is a starting point for a look at follower quality, not a verdict on it.
- When does @peterjkostis post?
- Most posts go out around 09:00 UTC, and Tuesday is its busiest day, at roughly 3.17 posts per day across the measured window.