Turning every page on the Pritzkers
Joined January 2025
- Tweets 179
- Following 324
- Followers 989
- Likes 442
58 Photos and videos
Pinned Tweet
30 Jun 2025
In my ongoing research into the Pritzker family and their history, I’m always looking for more documents, stories, contacts or leads.
If you have any information you’re willing to share, you can reach me on @signalapp
All communication is confidential unless otherwise agreed.
18 Feb 2025
Rockwood Notes is a kickstarter-style project to fund the research & publication of the most comprehensive account of the Pritzker family—one of the greatest stories of American business & wealth.
For the official pitch, visit the About Page (linked on page).
Here’s an overview
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Jun 15
Launched Dataroma-style 13F tracker at rockwoodresearch.com (desktop best).
Positions are weighted against a fund's approx AUM, not just its 13F book. More directionally accurate.
Create free account for custom lists, financials Event Monitor (latter two works in process).
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Jun 15
Event Monitor is previous week's special-situation filings. Free on the site and by email. No paywalls.
Can support more features/build out by buying ad/sponsor space on the website with your own message -- promote your substack, tell a funny joke etc.
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Jun 15
As you change the investors you follow, all the activity/portfolio etc data through website will reflect that.
In beta. Built with Claude. Report issues. Send suggestions. I have a friend w/ tech smarts to help build out going forward.
If you like it, please share.
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May 5
rockwoodarchive.com — a digital library of corporate histories. Financials, case studies, a mind map of the people involved and where they intersect.
Paid Rockwood Notes subscribers will get complimentary beta access.
More to come.
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Apr 10
A.N. Pritzker (L), Dec. 1984, 14 months before his death.
The Pritzker family’s net worth was estimated in excess of $1.5 billion, up from $250k in 1920.
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Mar 30
By far the hardest part about the Pritzker project to date has been 1) no one wants to talk about the Pritzkers without their having sanctioned the project and 2) so many documents have been destroyed.
I have 30 articles at various points of completion but am waiting on more details.
But, occasionally, I hit pay dirt and get ahold of 700 pages.
Can finally finish one of the articles now lol
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Feb 20
LA Times Top 100 California Industrials, 1970
Around the same time Buffett started buying Blue Chip Stamps stock.
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Feb 12
Jeff Bezos said, "Somebody needs to make a list where they rank people by how much wealth they've created for other people."
I found an attorney who would have made that list - one of the most fascinating people to come out of my Pritzker research so far.
(paid)
rockwoodnotes.com/the-most-f…
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Feb 5
Approaching 1 year since launching Rockwood Notes. Thank you to everyone who's supported this project so far.
A lot of trial, error, and info gathering behind the scenes — but I'm getting into a rhythm.
Rockwood Notes started as a subscriber-funded deep dive into the Pritzkers.
18 Feb 2025
Rockwood Notes is a kickstarter-style project to fund the research & publication of the most comprehensive account of the Pritzker family—one of the greatest stories of American business & wealth.
For the official pitch, visit the About Page (linked on page).
Here’s an overview
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Feb 5
Books, tools, apps - whatever I'm working on 5 or 30 years from now.
The paid subscription is an upfront investment. I hope lifetime access to future work makes it worth it for the people who supported it early.
12 days until the lifetime access perk goes away.
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Feb 2
It was pointed out to me that the attorney who argued Dirks case in front of the Supreme Court in 1983 was future billionaire David Bonderman.
Bonderman also was the bankruptcy attorney for Braniff.
Here’s a transcript of Dirks v SEC, Bonderman on behalf of Dirks: supremecourt.gov/pdfs/transc…
Jan 21
One of the largest frauds of its time — and the first major computer fraud. Out of which came a company that compounded about 20% for 23 years.
Jay Pritzker bought 9% in 1977. I still don’t know when he sold.
Free to read.
rockwoodnotes.com/darling-fr…
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Jan 29
Merged personal site with Rockwood. All articles will be in 1 place.
Here’s a writeup on $SNX
(Free)
If you have a Rockwood Notes account (free or paid) you can go into settings and toggle on/off “Rockwood Research” for emails on non-Pritzker content.
rockwoodnotes.com/td-synnex-…
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Jan 29
75x your money in under 5 years. Hold for 20 more.
A.N. Pritzker’s 500-Bagger
(Paid)
rockwoodnotes.com/a-n-pritzk…
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Jan 26
Chicago population (rounded):
1825: 100
1830: 300
1840: 4,000
1850: 30,000
1860: 100,000
1870: 300,000
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