matt
@matth217.bsky.social
Startups and software
Midwestern transplant to Bay Area and sometimes Tokyo
https://github.com/matthelmer
Currently building:
https://japanfinsight.com
Midwestern transplant to Bay Area and sometimes Tokyo
https://github.com/matthelmer
Currently building:
https://japanfinsight.com
how many mcp servers failed today, claude code?
November 12, 2025 at 7:29 PM
how many mcp servers failed today, claude code?
ETFs and passive investing need an overhaul.
"Congrats on your diversified portfolio!" = "You're now funding companies run by people you'd cross the street to avoid."
As it turns out, "broad market exposure" meant bankrolling a lot of absolute ghouls and corporate sycophants.
"Congrats on your diversified portfolio!" = "You're now funding companies run by people you'd cross the street to avoid."
As it turns out, "broad market exposure" meant bankrolling a lot of absolute ghouls and corporate sycophants.
September 18, 2025 at 4:45 PM
ETFs and passive investing need an overhaul.
"Congrats on your diversified portfolio!" = "You're now funding companies run by people you'd cross the street to avoid."
As it turns out, "broad market exposure" meant bankrolling a lot of absolute ghouls and corporate sycophants.
"Congrats on your diversified portfolio!" = "You're now funding companies run by people you'd cross the street to avoid."
As it turns out, "broad market exposure" meant bankrolling a lot of absolute ghouls and corporate sycophants.
Shipped my first Python package to PyPI 🎉
`edinet-tools` is now live.
Makes it easy to get Japanese corporate filings and analyze them with LLMs, even if you don't understand the language.
`pip install edinet-tools`, then add your API key.
pypi.org/project/edin...
`edinet-tools` is now live.
Makes it easy to get Japanese corporate filings and analyze them with LLMs, even if you don't understand the language.
`pip install edinet-tools`, then add your API key.
pypi.org/project/edin...
edinet-tools
Python package for accessing Japanese corporate financial data from EDINET
pypi.org
August 23, 2025 at 2:21 PM
Shipped my first Python package to PyPI 🎉
`edinet-tools` is now live.
Makes it easy to get Japanese corporate filings and analyze them with LLMs, even if you don't understand the language.
`pip install edinet-tools`, then add your API key.
pypi.org/project/edin...
`edinet-tools` is now live.
Makes it easy to get Japanese corporate filings and analyze them with LLMs, even if you don't understand the language.
`pip install edinet-tools`, then add your API key.
pypi.org/project/edin...
I've been listening to di.fm since 2006, and don't ever change. If you're into electronic music or dance music, this is the best.
DI.FM - addictive electronic music
DI.FM streams the world's most addictive electronic music.
di.fm
June 13, 2025 at 4:09 AM
I've been listening to di.fm since 2006, and don't ever change. If you're into electronic music or dance music, this is the best.
I find myself looking for any spare window of time to write code these days...it's just so insanely productive now.
June 11, 2025 at 3:50 AM
I find myself looking for any spare window of time to write code these days...it's just so insanely productive now.
waiting for `POST api.anthropic.com/v1/messages "HTTP/1.1 200 OK`
praying the response is a valid schema object
ritual
praying the response is a valid schema object
ritual
June 6, 2025 at 2:22 PM
waiting for `POST api.anthropic.com/v1/messages "HTTP/1.1 200 OK`
praying the response is a valid schema object
ritual
praying the response is a valid schema object
ritual
Speaking Tues 5/27 12pm at Japan Innovation Campus, Palo Alto about EDINET API Tools - my open-source project for Japanese financial data.
EDINET = Japan's SEC EDGAR. My Python/LLM tools make this data accessible, combining my Tokyo finance background with building cool stuff.
Come hang out! 😅
EDINET = Japan's SEC EDGAR. My Python/LLM tools make this data accessible, combining my Tokyo finance background with building cool stuff.
Come hang out! 😅
May 24, 2025 at 5:10 PM
Speaking Tues 5/27 12pm at Japan Innovation Campus, Palo Alto about EDINET API Tools - my open-source project for Japanese financial data.
EDINET = Japan's SEC EDGAR. My Python/LLM tools make this data accessible, combining my Tokyo finance background with building cool stuff.
Come hang out! 😅
EDINET = Japan's SEC EDGAR. My Python/LLM tools make this data accessible, combining my Tokyo finance background with building cool stuff.
Come hang out! 😅
Seems like CFPB uniquely vulnerable among federal agencies?
Single-director agency affected by Seila Law (2020), lacks structural independence protections that shield multi-member commissions like the FTC and SEC.
Most Americans can't afford financial/legal advice; they need CFPB protection.
Single-director agency affected by Seila Law (2020), lacks structural independence protections that shield multi-member commissions like the FTC and SEC.
Most Americans can't afford financial/legal advice; they need CFPB protection.
April 9, 2025 at 3:00 PM
Seems like CFPB uniquely vulnerable among federal agencies?
Single-director agency affected by Seila Law (2020), lacks structural independence protections that shield multi-member commissions like the FTC and SEC.
Most Americans can't afford financial/legal advice; they need CFPB protection.
Single-director agency affected by Seila Law (2020), lacks structural independence protections that shield multi-member commissions like the FTC and SEC.
Most Americans can't afford financial/legal advice; they need CFPB protection.
Today I launched an early access version of an idea I've been working on since last fall.
My very first stock purchases were Toyota and Mitsubishi Corp. yrs ago while working in Tokyo, and I am glad to see Japanese companies attracting more attention recently.
corpjapan-2d1df91b29e9.herokuapp.com
My very first stock purchases were Toyota and Mitsubishi Corp. yrs ago while working in Tokyo, and I am glad to see Japanese companies attracting more attention recently.
corpjapan-2d1df91b29e9.herokuapp.com
AI-Powered Japanese Market Insights
corpjapan-2d1df91b29e9.herokuapp.com
April 2, 2025 at 11:26 PM
Today I launched an early access version of an idea I've been working on since last fall.
My very first stock purchases were Toyota and Mitsubishi Corp. yrs ago while working in Tokyo, and I am glad to see Japanese companies attracting more attention recently.
corpjapan-2d1df91b29e9.herokuapp.com
My very first stock purchases were Toyota and Mitsubishi Corp. yrs ago while working in Tokyo, and I am glad to see Japanese companies attracting more attention recently.
corpjapan-2d1df91b29e9.herokuapp.com
No Tesla dealership nearby? You can still make a difference!
Volunteer to phonebank tomorrow for @joshweil.bsky.social.
I did this for the 1st time Fri.
Ask each voter to bring 2-3 friends to the polls - this multiplies your impact! One conversation can inspire many votes. Your voice matters.
Volunteer to phonebank tomorrow for @joshweil.bsky.social.
I did this for the 1st time Fri.
Ask each voter to bring 2-3 friends to the polls - this multiplies your impact! One conversation can inspire many votes. Your voice matters.
March 30, 2025 at 2:45 PM
No Tesla dealership nearby? You can still make a difference!
Volunteer to phonebank tomorrow for @joshweil.bsky.social.
I did this for the 1st time Fri.
Ask each voter to bring 2-3 friends to the polls - this multiplies your impact! One conversation can inspire many votes. Your voice matters.
Volunteer to phonebank tomorrow for @joshweil.bsky.social.
I did this for the 1st time Fri.
Ask each voter to bring 2-3 friends to the polls - this multiplies your impact! One conversation can inspire many votes. Your voice matters.
the deep sigh that comes from realizing the bug you've been working on for hours was just something really stupid you forgot to do
March 22, 2025 at 5:40 AM
the deep sigh that comes from realizing the bug you've been working on for hours was just something really stupid you forgot to do
born to work with llms and csv files and python and japanese corporate financial data
March 20, 2025 at 7:25 PM
born to work with llms and csv files and python and japanese corporate financial data
Human-centered systems, not system-centered humans.
March 19, 2025 at 9:07 PM
Human-centered systems, not system-centered humans.
Reddit clowns on TSLA:
"Once the stock stops going down, it will go up"
Feel free to buy that pile of flaming garbage my mans
"Once the stock stops going down, it will go up"
Feel free to buy that pile of flaming garbage my mans
March 19, 2025 at 4:41 PM
Reddit clowns on TSLA:
"Once the stock stops going down, it will go up"
Feel free to buy that pile of flaming garbage my mans
"Once the stock stops going down, it will go up"
Feel free to buy that pile of flaming garbage my mans
Magnificent energy in front of Palo Alto Tesla dealership on El Camino today, holy cow. #TeslaTakedown
March 9, 2025 at 1:12 AM
Magnificent energy in front of Palo Alto Tesla dealership on El Camino today, holy cow. #TeslaTakedown
trying out claude-3.7-sonnet w/ thinking mode enabled today as I code, should be fun with such a large context
March 4, 2025 at 7:22 PM
trying out claude-3.7-sonnet w/ thinking mode enabled today as I code, should be fun with such a large context
We need an X-Men for cognitive liberty
February 19, 2025 at 4:06 PM
We need an X-Men for cognitive liberty
I just called my reps with @5calls.org, you should too: 5calls.org
5 Calls
Spend 5 minutes. Make 5 calls. Make your voice heard.
5calls.org
February 17, 2025 at 11:01 PM
I just called my reps with @5calls.org, you should too: 5calls.org
It's a good day to sell your TSLA investment exposure
February 4, 2025 at 6:03 PM
It's a good day to sell your TSLA investment exposure
Last week I shared ETF-it, my Python tool to decompose ETF holdings. I got feedback that viewing the actual voting records of Vanguard’s fund managers would be helpful.
I've dug deeper and the findings are eye-opening.
I analyzed Vanguard's voting patterns for #Tesla, and here's what I uncovered:
I've dug deeper and the findings are eye-opening.
I analyzed Vanguard's voting patterns for #Tesla, and here's what I uncovered:
February 4, 2025 at 4:06 PM
Last week I shared ETF-it, my Python tool to decompose ETF holdings. I got feedback that viewing the actual voting records of Vanguard’s fund managers would be helpful.
I've dug deeper and the findings are eye-opening.
I analyzed Vanguard's voting patterns for #Tesla, and here's what I uncovered:
I've dug deeper and the findings are eye-opening.
I analyzed Vanguard's voting patterns for #Tesla, and here's what I uncovered:
Reposted by matt
Unilaterally shutting down USAID via Executive Order and merging it with State is openly illegal and Dems should immediately converge on D.C. and call for protests if Trump tries to do it.
February 1, 2025 at 1:28 AM
Unilaterally shutting down USAID via Executive Order and merging it with State is openly illegal and Dems should immediately converge on D.C. and call for protests if Trump tries to do it.
Today's progress: Standardized key Income Statement and Balance Sheet metrics from Japanese corporate filings. Making JP market data accessible to global investors. Let's connect if you need help with Japanese market data. #FinTech
February 1, 2025 at 12:05 AM
Today's progress: Standardized key Income Statement and Balance Sheet metrics from Japanese corporate filings. Making JP market data accessible to global investors. Let's connect if you need help with Japanese market data. #FinTech
My goal is to break down language barriers and provide deep, AI-assisted analysis of Japanese corporate disclosures.
This isn't for real-time trading, but rather for thorough, strategic research and understanding of the Japanese market.
This isn't for real-time trading, but rather for thorough, strategic research and understanding of the Japanese market.
January 28, 2025 at 8:39 PM
My goal is to break down language barriers and provide deep, AI-assisted analysis of Japanese corporate disclosures.
This isn't for real-time trading, but rather for thorough, strategic research and understanding of the Japanese market.
This isn't for real-time trading, but rather for thorough, strategic research and understanding of the Japanese market.
My app now parses Japanese semi-annual reports, extracting key financial data and management commentary.
Next up: Extraordinary Reports for major corporate changes.
Making Japanese market research accessible and insightful is the goal. 📊🤖
Next up: Extraordinary Reports for major corporate changes.
Making Japanese market research accessible and insightful is the goal. 📊🤖
January 28, 2025 at 8:35 PM
My app now parses Japanese semi-annual reports, extracting key financial data and management commentary.
Next up: Extraordinary Reports for major corporate changes.
Making Japanese market research accessible and insightful is the goal. 📊🤖
Next up: Extraordinary Reports for major corporate changes.
Making Japanese market research accessible and insightful is the goal. 📊🤖
ETF industry is approaching $10T USD in assets under management.
75% controlled by three behemoths.
ETFs are convenient but we sacrifice voting right as shareholders, relying on fund mgr to act in our best interest.
yea right..
Get back to oversight and voting as a shareholder in a business.
75% controlled by three behemoths.
ETFs are convenient but we sacrifice voting right as shareholders, relying on fund mgr to act in our best interest.
yea right..
Get back to oversight and voting as a shareholder in a business.
January 24, 2025 at 11:28 PM
ETF industry is approaching $10T USD in assets under management.
75% controlled by three behemoths.
ETFs are convenient but we sacrifice voting right as shareholders, relying on fund mgr to act in our best interest.
yea right..
Get back to oversight and voting as a shareholder in a business.
75% controlled by three behemoths.
ETFs are convenient but we sacrifice voting right as shareholders, relying on fund mgr to act in our best interest.
yea right..
Get back to oversight and voting as a shareholder in a business.