Company_Context
Financial Services
Security & Commodity Brokers, Dealers, Exchanges & Services
Institutional analysis of internal capital flows based on SEC Form 4 filings.
Signal_Window
Headline metrics use exact calendar-day windows.
8 directional transactions in 30D
Code P purchases and code S sales are measured from 2026.07.18 — 2026.08.16.
-$5.2M
Open-market buys minus sales2026.08.10
Latest available filing4
Reporting entities in windowNo 30D buyer
No open-market buys in 30DGriggs PC Nelson
$3.0MAnalysis of eligible SEC Form 4 activity for NDAQ indicates a bearish 30-day signal. The selected window contains transactions from 4 distinct reporting insiders, with aggregate nominal activity of $5.17M.
Open-market purchases minus open-market sales produce a negative net flow of $5.17M. Open-market executions represent the majority of measured nominal activity in this window, making the directional flow more representative of voluntary trading activity.
The largest open-market sale in the selected window was attributed to Griggs PC Nelson. Form 4 activity provides useful ownership context, but it should not be treated as a standalone prediction of future price performance.
Enriched_Research_Context
These indicators use normalized SEC roles, issuer metadata, cluster detection and post-filing market prices already calculated by the data pipeline.
Financial Services
Security & Commodity Brokers, Dealers, Exchanges & Services
0
Clustered open-market purchase records in the recent filing sample.
Recent_Filing_History
This table shows recent filing history and is not restricted by the selected 30D headline signal window.
The selected 30-day window contains 4 distinct reporting insiders with eligible transactions for NDAQ. This count changes when a different signal window is selected.
Open-market selling volume ($5.17M) currently exceeds buying volume ($0.00M), indicating net liquidation by insiders.
No eligible open-market purchases were reported for NDAQ during the last 30 calendar days.
INVESTOR AB
OPEN_MARKET_BUYReporting insider · 2026.06.11
30D
+3.2%
90D
PENDING
180D
PENDING
Performance uses the latest matured open-market record in this sample. It describes subsequent market movement and does not imply that the filing caused the price change.