NBIS Nebius Group N.V.

BEARISH Impact: 6/10 Insider Cluster (3 insiders)
Horizon days Filed May 19, 2026 Processed 24d 19h ago
Insider cluster: 3 insiders, $103.6M total
Latest settled — T+5d
NBIS ▲ +4.81% at T+5d
SHORT call ✗ call lost -4.81% · α vs SPY -2.56% · entry $197.73 → $207.24
Next anchor: T+20d in 4d
Currently $232.36 · -17.51% from $197.73 entry (call sign-flipped)
Entry anchored
May 19, 12:33 PM ET
via Databento tick
T+1d
-2.99%
call +2.99% · α +4.03%
$191.82
settled 24d ago
T+5d
+4.81%
call -4.81% · α -2.56%
$207.24
settled 17d ago
T+20d
call — · α —
in 4d
T+60d
call — · α —
in 2mo

Price Chart

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Executive Summary

Three insiders at Nebius Group sold a total of $103.6M in stock over a 7-day window, led by Chief Infrastructure Officer Andrey Korolenko's $101.6M open-market sale following derivative exercises. The total sales represent ~0.2% of the $50.7B market cap, which is modest in relative terms, but the involvement of a C-suite officer in a multi-hundred-million-dollar sale is notable. The cluster is amplified by cross-filing context (earnings, offering, and press activity), though the historical calibration on this ticker shows past bearish calls have underperformed, suggesting caution in over-interpreting the signal.

Key Financial Metrics

Direction
selling
Total Value
$103.6M
Insiders
3

Actionable Insight

The Korolenko sale is large in absolute terms but modest relative to market cap. The cross-filing amplifiers (earnings, offering, press) suggest this cluster may carry more weight than standalone. However, the model's poor historical track record on NBIS bearish calls (20% win rate, -21% avg T+20) argues against aggressive short positioning. Monitor for additional insider sales or a material adverse event in the next 10-Q.

Key Facts

  • Chief Infrastructure Officer Korolenko sold 1M shares for $101.6M after exercising derivatives at $0 cost basis
  • Chief Revenue Officer Boroditsky sold 4,500 shares for $979K on May 15
  • Director Bunina sold 5,000 shares for $1.02M on May 13
  • Total cluster value: $103.6M, representing ~0.2% of $50.7B market cap
  • All sales were open-market transactions; no 10b5-1 pattern identified
  • Past bearish calls on NBIS have averaged -21% at T+20, but the model's win rate is only 20%

Financial Impact

Insider sales of $103.6M, ~0.2% of market cap; C-suite officer sold $101.6M

insider ownershipmarket sentiment

Risk Factors

  • Insider sales may be liquidity-driven after derivative exercises, not a bearish signal
  • Historical calibration shows bearish calls on NBIS have been wrong 80% of the time at T+20
  • 0.2% of market cap is below the 0.5% threshold for 'significant' insider selling

Market Snapshot

Exchange
Nasdaq
Sector
Services-Computer Programming, Data Processing, Etc.
Analyst Consensus
77% bullish (22 analysts)

Documents Analyzed

This report is based on 1 SEC document filed with EDGAR.

DocumentAccession Number
CLUSTER Data (Synthetic)cluster-NBIS-1779208466653
10 reports for NBIS
Performance horizon
83% Hit rate 5 of 6 directional calls best @ T+1▲ +6.70%May 13, 2026
Filters
Rows
Reports for NBIS — sortable, filterable
Type Now
Jun 5, 2026
7d ago
Insider Cluster
NEUTRAL ★ 3/10
$232.50 awaiting T+1awaiting T+1$232.36 (−0.06%)
Jun 3, 2026
9d ago
Insider Cluster
NEUTRAL ★ 2/10
$251.68 $259.67▲ +3.17%▲ +2.78%$232.36 (−7.68%)
May 22, 2026
21d ago
Insider Cluster
BEARISH ★ 6/10
$214.77 $208.06▲ +3.12%▲ +3.71%$232.36 (−8.19%)
May 19, 2026
24d ago
Insider Cluster
BEARISH ★ 6/10
$197.73 $191.82▲ +2.99%▲ +4.03%$232.36 (−17.51%)
May 15, 2026
28d ago
Insider Cluster
NEUTRAL ★ 3/10
$199.86 $197.73▼ −1.07%▼ −0.42%$232.36 (+16.26%)
May 13, 2026
4w ago
6-K
BULLISH ★ 8/10
$207.27 $221.15▲ +6.70%▲ +5.92%$232.36 (+12.10%)
Apr 14, 2026
8w ago
Insider Cluster
BEARISH ★ 5/10
$161.94 $166.77▼ −2.98%▼ −2.21%$232.36 (−43.49%)
Apr 6, 2026
9w ago
Insider Cluster
BEARISH ★ 6/10
$112.54 $117.40▼ −4.32%▼ −4.26%$232.36 (−106.47%)
Mar 31, 2026
10w ago
Insider Cluster
BEARISH ★ 6/10
$103.76 $101.95▲ +1.74%▲ +2.49%$232.36 (−123.94%)
Mar 31, 2026
10w ago
Insider Cluster
BEARISH ★ 7/10
$103.76 $101.95▲ +1.74%▲ +2.49%$232.36 (−123.94%)
Showing 10 of 10

US Market Status

Market Closed — Opens Mon (49h 41m)

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