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Goodbye, and Thanks for All the Bikesheds

https://queue.acm.org/detail.cfm?id=3818307
35•Ygg2•51m ago•4 comments

GPT-5.6 used a prompt to close a 30-year gap in convex optimization

https://old.reddit.com/r/math/comments/1uxj3cy/after_openais_cdc_proof_announcement_gpt56_used_a/
336•mbustamanter•5h ago•198 comments

Gleam Is Now on Tangled

https://tangled.org/gleam.run/gleam
102•nerdypepper•2h ago•57 comments

Setting up your spare Mac for Claude Code to control, a step-by-step guide

https://ykdojo.github.io/claude-controls-mac/
77•ykev•2h ago•44 comments

Our Approach to Bioresilience: Isomorphic Labs and Google DeepMind

https://deepmind.google/blog/our-approach-to-bioresilience/
27•bookofjoe•2h ago•16 comments

Is this the end of the once-mighty GoPro?

https://amateurphotographer.com/latest/photo-news/going-going-gone-is-this-the-end-of-the-once-mi...
125•aanet•3d ago•205 comments

If You Build It, They Will Come

https://www.benlandautaylor.com/p/if-you-build-it-they-will-come
56•barry-cotter•2h ago•21 comments

Fable 5 vs. GPT-5.6 Sol on an NP-Hard Problem: Does /goal help?

https://charlesazam.com/blog/fable-5-gpt-5-6-sol-goal/
158•couAUIA•7h ago•71 comments

Elixir-lang.org has a new design

https://elixir-lang.org/
70•bbg2401•2h ago•48 comments

Show HN: Q3Edit – Edit and play Quake 3 maps in the browser

https://q3edit.com
28•drdator•3h ago•5 comments

LG monitors silently install software through Windows Update without consent

https://videocardz.com/newz/lg-monitors-silently-install-software-through-windows-update-without-...
757•baranul•7h ago•378 comments

Regressive JPEGs

https://maurycyz.com/projects/bad_jpeg/
574•vitaut•15h ago•59 comments

Tech note: making your own V-I plots at home

https://lcamtuf.substack.com/p/tech-note-making-your-own-v-i-plots
38•zdw•22h ago•6 comments

A Second-Grade Teacher Revived a Beloved Video Game

https://www.nytimes.com/2026/07/13/style/backyard-baseball-video-game-teacher.html
31•danso•5d ago•9 comments

What AI did to stackoverflow in a graph

https://data.stackexchange.com/stackoverflow/query/1953768#graph
277•secretslol•7h ago•325 comments

GTX 1080s: Testing a Legend

https://www.lttlabs.com/articles/2026/07/15/gtx-1080s-revisiting-legends
42•LabsLucas•2d ago•14 comments

Reviving a 15-year-old netbook with Arch Linux

https://parksb.github.io/en/article/41.html
197•parksb•4d ago•125 comments

Thanks HN for 15 years of support and helping me find my life's work

753•nicholasjbs•1d ago•96 comments

EU ban on destruction of unsold clothes and shoes enters into application

https://environment.ec.europa.eu/news/ban-destruction-unsold-clothes-and-shoes-enters-application...
178•robtherobber•4h ago•152 comments

The Computer at the Bottom of a Canal

https://negroniventurestudios.com/2026/07/18/the-computer-at-the-bottom-of-a-canal/
110•Kudos•9h ago•24 comments

The Fermi Paradox, Percolation, and Inbreeding

https://reactormag.com/the-fermi-paradox-percolation-and-inbreeding/
12•bryanrasmussen•2h ago•16 comments

Fake food delivery site for the dopamine

https://old.reddit.com/r/BingeEatingDisorder/comments/1uzr3ui/fake_food_delivery_site_for_the_dop...
42•guerrilla•2h ago•14 comments

First atmosphere found on Earth-like planet in habitable zone of distant star

https://www.bbc.com/news/articles/cy4kdd1e0ejo
503•neversaydie•1d ago•292 comments

British runner Josh Kerr breaks world record for mile which stood for 27 years

https://news.sky.com/story/british-runner-josh-kerr-breaks-world-record-for-mile-which-had-stood-...
55•austinallegro•3h ago•36 comments

In Germany if you say a restaurant is just ok they send the gestapo after you

https://twitter.com/eigen_moomin/status/2077471686295957749
9•bko•26m ago•2 comments

Qubes OS Security in the Public Record

https://arxiv.org/abs/2607.14587
55•sciences44•9h ago•9 comments

No link between acetaminophen use during pregnancy and adverse birth outcomes

https://sph.unc.edu/sph-news/no-link-between-acetaminophen-use-during-pregnancy-and-adverse-birth...
27•geox•2h ago•7 comments

The Zilog Z80 has turned 50

https://goliath32.com/blog/z80.html
261•st_goliath•22h ago•105 comments

TP-Link Kasa cameras leaked home GPS via unauthenticated UDP for 6 years

https://github.com/BadChemical/IoT-Vulnerability-Research-Public/blob/main/TP-Link_Kasa_EC71/Kasa...
194•BadChemical•20h ago•79 comments

Learning a few things about running SQLite

https://jvns.ca/blog/2026/07/17/learning-about-running-sqlite/
307•surprisetalk•1d ago•78 comments
Open in hackernews

Traders are increasingly betting against SpaceX just weeks after IPO

https://www.ft.com/content/2b96703d-440b-46db-8d86-9fff9ecc59d5
32•ethanhawksley•2h ago

Comments

ethanhawksley•2h ago
https://archive.is/uVXbr
tronfx6969•1h ago
ggwp
lokar•2h ago
Seems odd that they don't discuss a common reason to short a stock: you expect it to go down, without any real opinion on the business. In this case there is going to be a ton of new float fairly soon. It's a pretty safe bet that this will depress the price. So the natural trade is to sell now (short), and buy later (cover the short). That effectively moves the future price drop to "now", which is likely what we see. This is just one way (of many) in which the market factors future events into today's price, which is sort of the whole point.
brazukadev•24m ago
> Seems odd that they don't discuss a common reason to short a stock

this was extensively discussed BEFORE the IPO. That is why it was overpriced.

> This is just one way (of many) in which the market factors future events into today's price, which is sort of the whole point.

nope. the market transferred $80B to Elon Musk from the people that got scammed.

lokar•9m ago
That’s an odd non sequitur. I’m simply describing why a lot of the short positions are not from people who have any opinion on the value of the stock. They are engaged in an almost mechanical arbitrage like trade.

People tend to imagine that all short sellers have some fundamental disagreement with the current value of the security, or are trying to manipulate to the value for some reason. It’s useful to understand there is a lot of volume that does not really care about the value debate one way or another.

jorgeBanana•1h ago
They expect locked up shares to hit the market in August and tank the price
da-x•1h ago
That could happen, but should also consider that it's often the case with lockups release that they do not inflict much change on the stock price, but only if there's already enough trading volume on the stock due to other market conditions.
tronfx6969•1h ago
you clearly over-analyze the problems ! The right question should be answered is: after the investor who participated in the spcx pre-sale, receive the lockup shares, what will they do ? And what makes them do that ? Under which conditions ?
l0ng1nu5•1h ago
They also see one of the most ridiculously overvalued stocks of all time and want to collect easy money.
kingstnap•1h ago
"Just weeks"

Weeks is an enormous amount of time now actually. The majority of plays in what people do with stocks is actually very short term. People aren't the kind of Berkshire buy and hold-ers anymore.

If you look it up 60% of options volumes on the S&P 500 is 0 days to expiry. Literally gambling if it goes up and down this day.

Btw its not just the US that's like this. South Koreas 2x single stock ETF debacle and India's Janestreet options story are somehow even more degenerate.

da-x•1h ago
And on the other hand, there's a whole movement (in niche terms, though) of people going "just add to an S&P 500 ETF for 50 years and forget about everything else".
mfro•1h ago
Would have been an amazing idea 10 years ago. Not sure anymore.
lokar•43m ago
A lot of the short dated options are market makers and index arbs hedging.
kingstnap•22m ago
It's about 50/50 retail to institutions.
da-x•1h ago
On one hand, I sense that the same people who were in the shorts crowd of the Tesla 'boom or bust' Model 3 era ($TSLQQ) are now piling up against SPCX (e.g. Ed Zitron). Betting again Elon is very risky. And on the other, boy that huge valuation is scary.

The situation could be that there are two intertwined bubbles: an AI-tech-bubble and AI-financial-bubble, both at the same time and only one of them is going to really burst and affect valuations. If that happens, we can only guess the period of time it takes for the S&P 500 to recover.

ChrisArchitect•21m ago
[dupe]

SPCX is now Wall Street's most shorted new stock

https://news.ycombinator.com/item?id=48938001

Short sellers notch $8.7B profit as SpaceX shares dip to IPO price

https://news.ycombinator.com/item?id=48948435