Rogier Swierstra
@rogierswierstra.bsky.social
Having fun in math and finance. Lots of opinions, not many posts (EN & NL). Read my work at https://substack.com/@rogierswierstra
"Eens dacht ik dat ik een fout gemaakt had, maar dat bleek een vergissing"
November 19, 2025 at 7:03 PM
"Eens dacht ik dat ik een fout gemaakt had, maar dat bleek een vergissing"
...en je weet vast al dat je van mannen de leeftijd kan schatten aan de hand van hoe ze andere mannen aanspreken: kerel / jongen / maat / gast / gozer / dude / broer / bro ...
November 19, 2025 at 11:39 AM
...en je weet vast al dat je van mannen de leeftijd kan schatten aan de hand van hoe ze andere mannen aanspreken: kerel / jongen / maat / gast / gozer / dude / broer / bro ...
Maar jij kan je hopelijk ook op andere manieren uitdrukken
(En jouw homunculus is dus letterlijk een brootje?)
(En jouw homunculus is dus letterlijk een brootje?)
November 19, 2025 at 11:27 AM
Maar jij kan je hopelijk ook op andere manieren uitdrukken
(En jouw homunculus is dus letterlijk een brootje?)
(En jouw homunculus is dus letterlijk een brootje?)
My experience in public transportation is that they generate 90% of the volume of spoken communication, so it figures
(Teenage boys just call each other "bro" all the time while staring at their phones)
(Teenage boys just call each other "bro" all the time while staring at their phones)
November 19, 2025 at 7:02 AM
My experience in public transportation is that they generate 90% of the volume of spoken communication, so it figures
(Teenage boys just call each other "bro" all the time while staring at their phones)
(Teenage boys just call each other "bro" all the time while staring at their phones)
"La società dei cardinali" has a different ring to it
November 18, 2025 at 10:06 PM
"La società dei cardinali" has a different ring to it
Beach Boys had "Good coefficients"
November 18, 2025 at 2:24 PM
Beach Boys had "Good coefficients"
It's by Gideon Rachman? Thought-provoking
November 17, 2025 at 10:02 PM
It's by Gideon Rachman? Thought-provoking
Another fantastic piece, Toby! I'm a bit surprised though that TAI didn't mention "3D investing" as a reason to consider TPA; for us it's the experience of tying ourselves tightly to SAA-prescribed market indices--and getting market sustainability outcomes--that's driving the shift to active TPA
November 17, 2025 at 9:27 AM
Another fantastic piece, Toby! I'm a bit surprised though that TAI didn't mention "3D investing" as a reason to consider TPA; for us it's the experience of tying ourselves tightly to SAA-prescribed market indices--and getting market sustainability outcomes--that's driving the shift to active TPA
I thought it was an instance of an Oxford comma
November 11, 2025 at 4:01 PM
I thought it was an instance of an Oxford comma
It's a term used for "added value" in a broad sense. Weird to talk about your body or mind as if it were a portfolio, but I agree with Dan
November 11, 2025 at 10:43 AM
It's a term used for "added value" in a broad sense. Weird to talk about your body or mind as if it were a portfolio, but I agree with Dan
The Lekdijk perpetuals have an auction value >100x their face value, so curious whether courts will agree that a 20% premium to face is fair compensation
November 10, 2025 at 5:44 PM
The Lekdijk perpetuals have an auction value >100x their face value, so curious whether courts will agree that a 20% premium to face is fair compensation
It's the institutional equivalent of what to do with your collection of DVDs ... when your player breaks ... and all the companies that ever made them have disappeared
November 10, 2025 at 5:35 PM
It's the institutional equivalent of what to do with your collection of DVDs ... when your player breaks ... and all the companies that ever made them have disappeared
November 10, 2025 at 5:29 PM
Certainly add "moral hazard" and "adverse selection"
November 8, 2025 at 10:07 PM
Certainly add "moral hazard" and "adverse selection"
Ga formeren zonder VVD, en kijk hoe lang het duurt voordat de kroonprinsen haar wippen als ze geen ministerposten in het vooruitzicht hebben
November 8, 2025 at 2:20 PM
Ga formeren zonder VVD, en kijk hoe lang het duurt voordat de kroonprinsen haar wippen als ze geen ministerposten in het vooruitzicht hebben
...per persoon
November 6, 2025 at 2:39 PM
...per persoon
now... what if I got checked out by a bicycle on a cop...
November 6, 2025 at 1:32 PM
en.wikipedia.org/wiki/Khachap...
Because Georgia was on the other side of the Iron Curtain, pizza never had to compete in the West with khachapuri which conquered the former USSR
Because Georgia was on the other side of the Iron Curtain, pizza never had to compete in the West with khachapuri which conquered the former USSR
Khachapuri - Wikipedia
en.wikipedia.org
November 6, 2025 at 6:36 AM
en.wikipedia.org/wiki/Khachap...
Because Georgia was on the other side of the Iron Curtain, pizza never had to compete in the West with khachapuri which conquered the former USSR
Because Georgia was on the other side of the Iron Curtain, pizza never had to compete in the West with khachapuri which conquered the former USSR
Een groter extreemrechts blok na de verkiezingen en ik moet meteen op integratiecursus!
November 5, 2025 at 5:24 PM
Preview of the follow-up post
rogierswierstra.substack.com/p/e2918aef-5...
rogierswierstra.substack.com/p/e2918aef-5...
Slow Money
The opposite of "get rich quick". Pensions and long-term investing, finance solutions for society and a changing environment. Posts Wed & Fri, semi-regularly. Click to read Slow Money, by Rogier Swier...
rogierswierstra.substack.com
November 5, 2025 at 3:17 PM
Preview of the follow-up post
rogierswierstra.substack.com/p/e2918aef-5...
rogierswierstra.substack.com/p/e2918aef-5...