Founders Fund engagement report
@foundersfund - 245K followers on X
Measured over 1 original post from a 30-day window, last computed on September 9, 2026.
Engagement
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 204 interactions against 245K followers, an engagement rate of 0.083%. Posts are seen about 71K times each, and 0.288% of those impressions turn into an interaction. That is about 28.9% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 0.13 posts a day over the last 30 days, though only 13% of days saw any activity at all. Most posts go out around 17:00 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 8.0K interactions, about 39x its own typical post. 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 9, 2026.
Where this sits in the catalog
At 0.083%, Founders Fund sits above the 25th percentile of the 66,393 accounts in this comparison. That places it in the below the median band, which runs 0.016% to 0.1%.
Show the percentile table
| Percentile | Engagement rate |
|---|---|
| 10th percentile | 0.002% |
| 25th percentile | 0.016% |
| 50th percentile | 0.1% |
| 75th percentile | 0.499% |
| 90th percentile | 2.09% |
| 99th percentile | 119.5% |
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 17:00 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.
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 | 100% of posts | +111% | +108% to +115% | 34K |
| Outbound link | 0% of posts | -41% | -42% to -40% | 32K |
| Typical length | - | -8% | -9% to -7% | 41K |
- 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 55 characters, which falls in the under 80 characters band. Across the catalog, posts under 80 characters run 8% below 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
- Jun 4, 202639x their median
MAFIA EP 001 https://t.co/FDijsKFdJN
- Oct 28, 202529x their median
Substrate is building a next-generation foundry to return America to dominance in semiconductor production. To achieve this, we will use our technology—a new form of advanced X-ray lithography—to power them. America invented semiconductors. We will lead again. https://t.co/1rgnWSYYZG
- Jun 12, 202629x their median
https://t.co/FpvYCd7jRV
- Jun 2, 202620x their median
Following breakthrough results, we’re bringing longevity medicine to human trials. We’ve raised a $435M Series C led by @foundersfund to make it happen. Reprogramming cell age has the potential to create more healthy years for everyone. We're closer than ever to realizing it. https://t.co/YkPaGkS4bK
- Oct 24, 20255.3x their median
Valthos builds next-generation biodefense. Of all AI applications, biotechnology has the highest upside and most catastrophic downside. Heroes at the frontlines of biodefense are working every day to protect the world against the worst case. But the pace of biotech is against them: more powerful methods to design biological systems, with near-universal access, open up an increasing surface area of threats. In this new world, the only way forward is to be faster. So we set out to build the tech stack for biodefense. Our team of computational biologists and software engineers applies frontier AI to identify biological threats and update medical countermeasures in real-time. We are backed by $30M from @OpenAI, @Lux_Capital, @foundersfund and others including @Definition_Cap. We are actively hiring engineers to join in the mission - if that sounds like you, get in touch.
- Apr 25, 20264.3x their median
*New Lecture* Stanford @frontiersystems '26, Session 8 (Full Video) Energy Bottlenecks with @ScottNolan from @generalmatter 00:00 Energy Bottlenecks Intro 00:11 AI Factory Overview 02:55 Why Power Matters 03:56 From ChatGPT to Enterprise Demand 07:25 Meet Scott Nolan 09:03 Energy Is The Real Limit 11:16 Demand Growth Reality Check 13:17 Stranded Power Era 15:54 What Data Centers Need 16:59 Nuclear As Baseload Path 18:21 Fuel Cycle And Enrichment Gap 21:41 Bitcoin Mining As Rehearsal 25:03 Building Primitives Not Pivots 28:17 Nuclear Safety And Narrative 30:22 Calibrating the Moment 30:54 Pick Important Problems 32:14 General Matter Breakthrough 35:04 Building Team and Site 37:18 Government Support Reality 39:19 Jobs and AI Demand 42:37 Scaling Timelines and Space 46:16 Early SpaceX Lessons 50:25 Nuclear Perception and Europe 53:17 Supply Chain and Enrichment 56:56 Why US Lost Enrichment 59:25 Back to the Future Wrap
- Dec 10, 20254.2x their median
Flashback to chatting w/ @foundersfund's Luke Nosek when he led the first investment in @SpaceX. From old PE Week Wire newsletter in 2008: https://t.co/3hTDrmgkTl
- Apr 7, 20263.9x their median
Over the past few months, we have integrated @googledeepmind's AlphaEvolve into our computational lithography. Enabled by AlphaEvolve's algorithmic leaps, we are now printing complex patterns in a single exposure that would otherwise require multiple. https://t.co/0ujvA4ALWz
- Mar 17, 20262.9x their median
hello the 2026 @HillValleyForum agenda see you next week https://t.co/TBlKtZ4sWB
- Mar 5, 20262.6x their median
Ambition is timeless. Tools are not. Today we are announcing an $80M acceleration round at a $1B valuation led by @foundersfund, with participation from @sequoia @generalcatalyst @Lux_Capital @RedGlass @lightspeedvp Avenir, and @Haystack. In the last year, we grew revenue 7x, added some of the world’s most serious hardware enterprises, and built over twice the new product surface area than in our prior two years combined. The most ambitious and fastest-moving hardware teams choose Nominal, from aerospace to energy, and automotive to defense, because it helps them learn faster and scale more efficiently. Our mission is to bring that advantage to every team building in the physical world. For those not yet using Nominal, we hope to have the opportunity to earn your trust and work hard for you and your company soon. All systems Nominal. 🚀 Thank you @business and @EdLudlow for sharing out story. And @traestephens and @zebulgar for doubling down. Read more about our announcement here: https://t.co/xxjndTBMdw
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.
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Reading these numbers
A typical post picks up 204 interactions against 245K followers, an engagement rate of 0.083%. Posts are seen about 71K times each, and 0.288% of those impressions turn into an interaction. That is about 28.9% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 0.13 posts a day over the last 30 days, though only 13% of days saw any activity at all. Most posts go out around 17:00 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 8.0K interactions, about 39x its own typical post. 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 Founders Fund's engagement rate on X?
- Founders Fund (@foundersfund) has an engagement rate of 0.083%, based on the median interactions across 1 original posts from the last 30 days against 244,906 followers. Replies, reposts and quote-posts of other people are excluded from that sample.
- Is that a good engagement rate?
- At 0.083%, Founders Fund sits above the 25th percentile of the 66,393 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 @foundersfund have real engagement?
- There is not yet enough sample to rank this account against others of its size.
- When does @foundersfund post?
- Most posts go out around 17:00 UTC, and Wednesday is its busiest day, at roughly 0.13 posts per day across the measured window.