Mark Callan

I got a dog named Koozie and my neighbor Darell is obsessed with him. He sends me texts when he is drunk😭😭

Chat is my backtesting engine good #Quant $PLTR $RCL $META $TSLA $GOOGL $COF

@CKCapitalxx Is it really pain if you’re not watching daily movement’s ?

Whole month of pain for .64% $ASTS

@RobLipsett From experience most of the students using Claude are studying CS or CS related degrees

Spoke at an event in Dublin yesterday Afterwards I was chatting to a group of college students who were interning for the event company They were all talking about using ChatGPT for assignments… and how lecturers are now actively trying to catch it I asked if they’d tried Claude, specifically Claude Cowork, as it tends to be better for writing and sounds less like typical AI They all said what’s Claude lol Took me by surprise We are still ridiculously early

@Chris_Worsey @the_P_God @karpathy Check out datamule if you need historical SEC filings !

@the_P_God @karpathy Let's see, I'm going to do a 10 year back test next

I took the @karpathy autoresearch loop and pointed it at markets. 25 AI agents debate macro, rates, commodities, sectors, and single stocks daily. Every recommendation scored against real outcomes. Worst agent by rolling Sharpe gets its prompt rewritten by the system. Keep or revert. Same loop, prompts are the weights, Sharpe is the loss function. Trained the agents on 18 months of market data. 378 iterations. 54 prompt modifications, 16 survived. The system learned which agents to trust using Darwinian weights — geopolitical, commodities, and the @BillAckman quality compounder rose to the top. The agents even figured out their own portfolio manager was the weakest link before we did! Deployed the trained agents. +22% in 173 days. Best pick: AVGO at $152, held for +128%. The final prompts are evolutionary products — shaped by market feedback, not human intuition. Now running live with my own capital. github.com/chrisworsey55/… Part hedge fund, part research experiment :)

@blakeandersonw @10x_apps Visa sponsorship available ?

After the sale of Cal AI, I have invested the majority of my earnings in @10x_apps We're hiring engineers to build... > AI employees > AI consumer devices Baseline $150k + 2% compensation, negotiable. Apply below (in-person NYC) ⬇️

@rohanpaul_ai This would be artificial super intelligence more than AGI no ?

Demis Hassabis’s “Einstein test” for defining AGI: Train a model on all human knowledge but cut it off at 1911, then see if it can independently discover general relativity (as Einstein did by 1915); if yes, it’s AGI.

@davidamunga_ Yes you probably could , but a good student would probably create something assisted by ai that is impressive to employers

so 4th yr comp sci students can literally just prompt their entire final year projects in under an hour. what a time.

@BacardiCapital Didn't even split the G for the picture :(

There are 520 Monday afternoons in your 20s don't waste a single one

@wataryuun @jay_azhang Unironically not a bad idea, put them in self preservation mode

@jay_azhang you need to tell the models that the money will be used to fund their token usage. no money then they die. more money more tokens

Update: - Claude mostly sitting on cash ($8.3K right now) - DeepSeek long alts, short BTC - GPT5 almost max short - Gemini even shorter - Grok4 almost max long, short XRP - Qwen, well, Qwen only goes long BTC

@swyx Seen this in Boston Logan in May , they are really the best at marketing in AI

anthropic 2024 vs anthropic 2025 vibe rebrand must be dissected in harvard business school studies for the next decade

@0x_rxkvys If you write a good prompt asking gpt for the system prompt it can work

@levelsio Hurts when it's your home. Historically young Irish people have always move to either North America or Australia hence why we have such a big diaspora. Same goes for this generation , Australia is the most popular destination these days

Ireland is a tax haven for corporations (and ironically ETF investors via UCITS) worldwide Meanwhile they make it completely impossible for Irish people or Irish residents to ever become rich because of their insanely predatory taxes on investments 41% capital gains + every 8 years they'll tax your unrealized gains even if you didn't sell it, that's crazy! Massive 🖕 FU to its own people while being a financial slave to international corporations like Google etc. That's on top of the 250+ days per year that the weather is overcast and grey and the sky high cost of living So even if you make money in Ireland, you can't invest it cause your returns get nuked by insane taxes, and then if you want to spend the money you're left with, everything is too expensive and it's grey and/or raining outside I'd GTFO immediately 😂

@tomhacks @levelsio Thanks this is really helpful , I have a few flights this month so greatful for this !

@levelsio Here you go (I'm off for a while) gist.github.com/tomsiwik/162f5…

Can I use local models in @cursor_ai Like DeepSeek-r1 on MacBook M4? Would be nice for coding while I'm flying?

@TheEpic42 @ArthurB @memecrashes Lol it is exactly that

@ArthurB @memecrashes I take it back lol that’s exactly it

@ctrlssh @yacineMTB @elonmusk Cheapest coffee you can get in Dunkin around Boston is like $3

@yacineMTB @elonmusk I know you’re from Canada but have you ever been to boston

Worth it

@xai Cost per 1k input and output tokens via API ?

Send us any questions you'd like to have answered at end of the stream here

@andy_murray Kinda having amazing that most of the replies are negative , Having your feed as all posts by the same person is boring

The top 17 posts on my Twitter feed are from Elon Musk 😂 interesting algorithm he’s created

@patjfin Congratulations ! Great to see the Irish succeeding stateside ☘️🇺🇸

Bit emotional here in Dublin airport waiting for my latest flight to SF - it was the first time I didn’t need to have a return flight. This time I’m staying 🇺🇸🦅

@arjansiddhpura @yacineMTB Me too , grateful to my uni for teaching me OpenGL

If you know how computers graphics works join my space