Siren Nasdaq NexGen Economy ETF (BLCN)
BLCN moved a median of 0.00% 30 minutes after news, and -0.27% by the close. How BLCN actually reacts to news — the realized, point-in-time move the market made, measured across 26 labeled events over the last three years with zero look-ahead.
BLCN’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | 0.00% | 43% | 7 |
| 30-min | 0.00% | 46% | 13 |
| 60-min | -0.07% | 30% | 20 |
| to close | -0.27% | 31% | 26 |
Small sample: only 26 measured events — treat these medians as indicative, not stable.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
Email me when BLCN moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to BLCN's baseline. Nothing else.
Recent BLCN events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| SRN Advisors, LLC to Close and Liquidate the Siren DIVCON Leaders Dividend ETF (LEAD) and Siren NexGen Economy ETF (BLCN) | Press release | PR Newswire | +0.00% | -2.95% | |
| Form N-PX Siren ETF Trust For: Jun 30 | SEC filing · Form N-PX | SEC EDGAR | — | -1.74% | |
| Form NPORT-P Siren ETF Trust For: Jun 30 | SEC filing · Form NPORT-P | SEC EDGAR | — | -0.64% | |
| Form 497K Siren ETF Trust | SEC filing · Form 497K | SEC EDGAR | — | -2.00% | |
| Form 497J Siren ETF Trust | SEC filing · Form 497J | SEC EDGAR | — | -5.89% | |
| Form 40-17G Siren ETF Trust | SEC filing · Form 40-17G | SEC EDGAR | +0.00% | +0.64% | |
| Form 485BPOS Siren ETF Trust | SEC filing · Form 485BPOS | SEC EDGAR | +0.00% | -2.18% | |
| Form 24F-2NT Siren ETF Trust For: Mar 31 | SEC filing · Form 24F-2NT | SEC EDGAR | — | -0.27% | |
| Form N-CEN Siren ETF Trust For: Mar 31 | SEC filing · Form N-CEN | SEC EDGAR | +1.01% | +0.97% | |
| Form N-CSR Siren ETF Trust For: Mar 31 | SEC filing · Form N-CSR | SEC EDGAR | — | -1.08% | |
| Form NPORT-P Siren ETF Trust For: Mar 31 | SEC filing · Form NPORT-P | SEC EDGAR | — | +2.33% | |
| Form NPORT-P Siren ETF Trust For: Dec 31 | SEC filing · Form NPORT-P | SEC EDGAR | — | -0.27% | |
| Form 497 Siren ETF Trust | SEC filing · Form 497 | SEC EDGAR | +0.04% | +2.26% | |
| Form 497K Siren ETF Trust | SEC filing · Form 497K | SEC EDGAR | +0.50% | +2.22% | |
| Form N-CSRS Siren ETF Trust For: Sep 30 | SEC filing · Form N-CSRS | SEC EDGAR | -0.08% | +1.06% | |
| Form NPORT-P Siren ETF Trust For: Sep 30 | SEC filing · Form NPORT-P | SEC EDGAR | — | +0.00% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the BLCN section they belong to.
Where else BLCN is measured.
BLCN earnings → · Analyst actions → · SEC filings →
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Every name we’ve measured, in one place.
How the numbers are made.
How is Siren Nasdaq NexGen Economy ETF's median reaction calculated?
Every labeled BLCN news event is measured from its own timestamp: the last trade before the news is the base price, and the move is read at fixed horizons — 30 minutes of trading, then the close. The median across 26 events is what this page reports. On a sample this small (26 events), treat these medians as indicative, not stable. Point-in-time, zero look-ahead: no event borrows information from a later one.
What counts as a positive reaction?
Any event whose price move is above zero at the horizon, relative to the last trade before the news timestamp.
How often is this page updated?
The news table refreshes automatically as new events are labeled and priced. The reaction medians are re-pulled in batches from the dataset — the figures here are as of 2026-09-21.
Does BLCN's past reaction predict its next one?
No. These are realized facts about past events, not forecasts. They describe a distribution — they say nothing certain about any future move.