Whale Tracker

LEAN BEARISH

Whales showing caution on NBIS. Distribution signals outweigh accumulation. Short interest is elevated at 20.7% of float — significant bearish pressure but squeeze potential exists. Insiders are net sellers (669,971 shares sold vs 500,000 bought) — management reducing exposure. Strong institutional ownership at 63.2% with 9 of 10 top holders actively accumulating this quarter.

Action Plan

Avoid new long positions until whale activity shifts
Insider selling suggests management has near-term concerns
Consider trimming if position size is large
Set alerts for insider buying or SI decrease as reversal signals

📈 Options Flow 期权异动

Unusual options volume vs open interest. High volume/OI ratio signals whale positioning. Put/Call ratio indicates directional bias.

PUT / CALL RATIO

0 (Bullish)1.02.0+ (Bearish)

1.31

BEARISH

CALL VOLUME

41,907

PUT VOLUME

55,016

TOTAL VOLUME

96,923

UNUSUAL STRIKES

Unusual Strikes — Vol/OI > 3x (4C / 6P)

TypeStrikeExpiryVolOIRatio

CALL$1102026-06-261891189.0x

PUT$3102026-07-1715115.0x

PUT$2502026-06-052492012.4x

CALL$3052026-06-266588.1x

PUT$2302026-06-052,4813876.4x

CALL$2952026-06-055851105.3x

PUT$2222026-06-055201035.0x

CALL$1722026-07-02515.0x

PUT$1192026-06-052,1474354.9x

PUT$1752026-06-055,1901,0984.7x

High Volume Contracts — Vol > 500 (10 contracts)

TypeStrikeExpiryVolume

PUT$1852026-06-055,535

PUT$1752026-06-055,190

PUT$1802026-06-054,529

PUT$1602026-06-053,821

PUT$2302026-06-052,481

CALL$2602026-06-052,438

CALL$2502026-06-052,311

CALL$2402026-06-052,218

PUT$1192026-06-052,147

CALL$2352026-06-051,927

P/C OI RATIO

1.38

TOTAL OI

351,713

CALL OI

147,661

PUT OI

204,052

Put/Call volume ratio: 1.31 (bearish)
Total options volume: 96,923 (calls 41,907 / puts 55,016)
Top unusual: CALL $110.0 exp 2026-06-26 — vol/OI 189.0x
13 unusual strikes detected (5C / 8P)

👤 Insider Trading 内部交易

SEC Form 4 filings — officer and director buys/sells in the last 90 days. Net buying is a strong bullish signal.

43% BUY

57% SELL

SHARES BOUGHT (6m)

500,000

SHARES SOLD (6m)

669,971

NET INSIDER FLOW

-169,971

FORM 4 FILINGS (90d)

Recent Insider Transactions (0 buys / 10 sells / 0 grants)

TypeInsiderSharesDate

SELLBORODITSKY MARC4,5002026-05-15

SELLBUNINA ELENA10,8942026-05-13

SELLKOROLENKO ANDREY500,0002026-05-13

SELLBUNINA ELENA10,8192026-05-06

SELLBUNINA ELENA5,8822026-05-04

SELLBORODITSKY MARC4,5002026-04-15

SELLBUNINA ELENA20,0602026-04-14

SELLKOROLENKO ANDREY31,3572026-04-06

SELLVOLOZH ARKADY33,3582026-04-01

SELLSHTAN DANILA13,4892026-03-31

Insider buying: 500,000 shares
Insider selling: 669,971 shares
13 Form 4 filings in last 90 days
Net insider SELLING — bearish signal

🏦 Smart Money Flow 机构资金流向

Quarter-over-quarter position changes from 13F filings. Shows whether institutional investors are accumulating (buying more) or distributing (selling) — the strongest signal of whale conviction.

INSTITUTIONAL OWNERSHIP

63.2%

ACCUMULATION vs DISTRIBUTION

90% ACCUMULATING

10% DISTRIBUTING

NET SHARES FLOW

+14,463,124

FLOW SCORE

+0.67

ADDING

SELLING

Institutional Position Changes (QoQ)

ActionInstitution% HeldQoQ ΔShares Δ

★ NEW POSITIONOrbis Allan Gray Ltd3.79%NEW+4,979,386

★ NEW POSITIONAltshuler Shaham Ltd2.36%NEW+2,592,000

▲▲ HEAVY BUYValue Aligned Research Advisors, LLC2.65%+75.9%+2,507,723

▲▲ HEAVY BUYFred Alger Management, LLC4.37%+20.9%+1,661,403

▲▲ HEAVY BUYMorgan Stanley1.67%+33.8%+925,436

▲▲ HEAVY BUYCapital Research Global Investors1.53%+21.4%+591,915

▲ ADDINGBlackrock Inc.4.53%+5.4%+506,451

▲ ADDINGJanus Henderson Group PLC1.47%+14.9%+416,788

▲ ADDINGState Street Corporation1.60%+8.8%+282,022

▬ HOLDAccel Leaders 4 Associates L.P.2.09%0.0%0

ETF & Mutual Fund Flow (3 adding / 0 selling)

ActionFundQoQ ΔShares Δ

▲▲ HEAVY BUALGER INSTITUTIONAL FUNDS-Alger Focus Equity +49.0%+760,945

▲ ADDINGEuroPacific Growth Fund-EUPAC Fund+16.9%+325,868

▲▲ HEAVY BUJANUS INVESTMENT FUND-Janus Henderson Contrar+23.8%+368,698

▬ HOLDiShares Trust-iShares Core MSCI EAFE ETF+0.9%+13,993

▬ HOLDALGER FUNDS II-Alger Spectra Fund-4.4%-68,649

▬ HOLDALGER Inst. Fd.S-Alger Capital Appreciation I+1.6%+17,160

▬ HOLDALGER FUNDS-Alger Capital Appreciation Fund-1.0%-8,559

▬ HOLDJANUS INVESTMENT Fd.-Janus Henderson Global T-0.6%-5,602

▬ HOLDFidelity Concord Street Trust-Fidelity Intern+1.5%+11,605

▬ HOLDFidelity Salem Street Trust-Fidelity Series G-1.1%-8,233

Institutional ownership: 63.2%
Smart money flow: 9 adding / 0 selling / 1 hold
Net shares added by institutions: +14,463,124
Biggest mover: Orbis Allan Gray Ltd added 4,979,386 shares (+149.3%)

🕶 Short Interest & Dark Pool 做空 & 暗池

Short interest as % of float and days-to-cover. Rising SI = bearish pressure. High SI + decreasing = shorts covering (bullish). Squeeze risk rated by SI level.

SHORT INTEREST (% OF FLOAT)

0%10%20%30%+

SHORT % FLOAT

20.7%

DAYS TO COVER

2.6

SI CHANGE (MoM)

↑ 3.4%

SQUEEZE RISK

ELEVATED

SHARES SHORT

45,099,075

PRIOR MONTH

43,630,483

FLOAT SHARES

210,582,324

AVG VOLUME

17,570,526

⚠ Extreme short interest — heavy bearish conviction. However, high SI + declining trend could trigger a short squeeze if a catalyst appears (earnings beat, analyst upgrade, sector rotation).

Short interest: 20.7% of float
Days to cover: 2.6
Short interest MoM: ↑ 3.4%
Squeeze risk: ELEVATED

📡 Data Sources 数据来源

Options Flow

BEARISH (80%)

Insider Trading

NEUTRAL (90%)

Smart Money Flow

BULLISH (75%)

Short Interest

BEARISH (60%)

📋 Summary 综合摘要

[dark_pool] Short interest: 20.7% of float
[dark_pool] Days to cover: 2.6
[institutional] Institutional ownership: 63.2%
[institutional] Smart money flow: 9 adding / 0 selling / 1 hold
[insider] Insider buying: 500,000 shares
[insider] Insider selling: 669,971 shares
[options_flow] Put/Call volume ratio: 1.31 (bearish)
[options_flow] Total options volume: 96,923 (calls 41,907 / puts 55,016)