Security Television Network
STN Data and API
Find STN public index reference pages, methodology and data-source context. API access and reuse remain subject to the applicable terms.
Record details
- Record modified
- 2026-10-30T23:49:39.839Z
- Methodology version
- equal_weight_chain_linked_close_v1
- Market date
- 2026-10-29
- Batch publication
- 2026-10-30T23:49:39.839Z
- Source scope
- IEX Exchange executions only; T+1 historical data
STN Index Register
This public record covers STN Cybersecurity, STN Defense, STN AI Security, STN Public Safety, STN Drone & C-UAS, STN Critical Infra, STN Homeland Security. It links documented membership, calculation rules and accepted daily publication evidence.
The company registry is the census of recorded identities; the index is a separately governed selection and weighting. End-of-day index levels are not share prices.
Latest validated daily publication
7 validated index records are available from the accepted 2026-10-29 batch. Index levels are points; daily changes are percent, not share-price returns.
STN Cybersecurity: 1210.7188 index points as of 2026-10-29; daily change -3.7728%.
STN Defense: 1086.1674 index points as of 2026-10-29; daily change 4.5431%.
STN AI Security: 1054.657 index points as of 2026-10-29; daily change 0.1458%.
STN Public Safety: 948.9634 index points as of 2026-10-29; daily change 2.676%.
STN Drone & C-UAS: 1054.9101 index points as of 2026-10-29; daily change 6.3702%.
STN Critical Infra: 1067.5495 index points as of 2026-10-29; daily change 0.4646%.
STN Homeland Security: 1011.1967 index points as of 2026-10-29; daily change 3.3298%.
| Index | Market date | Level (points) | Daily change (points) | Daily change (%) | Constituents |
|---|---|---|---|---|---|
| STN-CY | 2026-10-29 | 1210.7188 | -47.4691 | -3.7728 | 9 |
| STN-DF | 2026-10-29 | 1086.1674 | 47.2013 | 4.5431 | 7 |
| STN-AI | 2026-10-29 | 1054.657 | 1.5351 | 0.1458 | 4 |
| STN-PS | 2026-10-29 | 948.9634 | 24.7321 | 2.676 | 2 |
| STN-DR | 2026-10-29 | 1054.9101 | 63.1759 | 6.3702 | 3 |
| STN-CI | 2026-10-29 | 1067.5495 | 4.937 | 0.4646 | 4 |
| STN-HS | 2026-10-29 | 1011.1967 | 32.5856 | 3.3298 | 4 |
Published calculation methodology
equal_weight_chain_linked_close_v1: the documented STN families use equal-weight, chain-linked closing index levels. The first accepted publication starts each family at 1,000 index points.
For each published family, the daily chain factor is the arithmetic mean of constituent current-close / prior accepted close ratios. The new level is the prior published level multiplied by that factor. A baseline observation with no prior accepted closes has a factor of one.
Source validation, dates, attribution and file integrity belong to the publication evidence. A company identity correction, follow, advertisement, affiliate offer or commercial claim does not select a constituent or change its weight. The public projection does not read unpublished rebalance or restricted decision stores.
7 documented families are in this page’s scope. Source-specific missing prices or unavailable history do not establish zero performance.
- Methodology version
- equal_weight_chain_linked_close_v1
Source, scope and publication evidence
Published reference values use IEX Exchange HIST T+1 historical data. They describe IEX Exchange executions only, not consolidated-market prices, real-time trading quotes or investment advice.
Market date: 2026-10-29. Accepted batch published at 2026-10-30T23:49:39.839Z. Source-file SHA-256: 1dbfb120a37eee26ddf47f8beba2c3bd02cd398e699ae0008ac75fc589852b95.
Data provided for free by IEX. By accessing or using IEX Historical Data, you agree to the IEX Historical Data Terms of Use.
- Market date
- 2026-10-29
- Batch publication
- 2026-10-30T23:49:39.839Z
- Source scope
- IEX Exchange executions only; T+1 historical data
Public index data and API
The keyless read API provides available published index records, market dates, methodology version, source attribution and source-file integrity. Access to a webpage or endpoint does not grant additional source redistribution rights.
GET /api/v1/indexes returns JSON. The .json and .csv variants return the corresponding public publication formats. Source availability and applicable terms remain in force.
Attribution: Security Television Network
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