Adriano Dal Pastro
d0c804ebfc
research(gtaa): l'assenza di API DEGIRO vale -0.02 di Sharpe, non e' squalificante
...
Domanda dell'operatore: "degiro ha api?". Fatto: no, non ufficiale; Revolut nemmeno
(la sua e' per pagamenti); IB si'. I wrapper non ufficiali girano su credenziali +
seed 2FA e si rompono IN SILENZIO a ogni cambio di front-end — e il progetto ha gia'
pagato quel prezzo con fresh_5m il 26/07. Un esecutore che puo' rompersi senza dirlo
e' peggio dell'esecuzione manuale.
Misurato il costo di NON automatizzare invece di discuterlo:
carico operativo: 15 settimane/anno con >=1 ordine (29% dei controlli, 1.4 per volta)
ritardo 1g -0.02 Sharpe (peggiora in 6/11 anni = moneta)
ritardo 3g -0.13
ritardo 10g -0.27
Il costo non e' il ritardo tipico ma la coda: il rischio dell'operativita' manuale e'
la dimenticanza, e si copre con un allarme, non con una API (gtaa_rebalance_plan esiste
gia' in produzione ed e' nato per un esecutore).
Nota di metodo: sulla finestra UCITS di 3.2 anni la curva del ritardo NON e' monotona
(5g -0.26, 10g -0.13) -> il campione corto non risolve differenze di questa taglia,
quindi il numero si legge sulla finestra lunga a 10 anni, dove lo e'.
Book, pesi, cron, config INVARIATI.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com >
Claude-Session: https://claude.ai/code/session_01XBbYmiXqbUNuGpK9sfbsGp
2026-07-27 11:05:33 +00:00
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