Whale Tracker

LEAN BEARISH

Whales showing caution on MU. Distribution signals outweigh accumulation. Insiders are net sellers (422,205 shares sold vs 43,176 bought) — management reducing exposure. Strong institutional ownership at 82.2%, but 3 of 10 top holders are distributing.

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)

1.04

LEAN BEARISH

CALL VOLUME

175,835

PUT VOLUME

183,649

TOTAL VOLUME

359,484

UNUSUAL STRIKES

Unusual Strikes — Vol/OI > 3x (2C / 8P)

TypeStrikeExpiryVolOIRatio

PUT$5102026-05-017541550.3x

PUT$5052026-05-017701648.1x

CALL$6052026-05-011,9777626.0x

PUT$5252026-05-012331023.3x

PUT$5302026-05-0122122.0x

CALL$3682026-05-0153317.7x

PUT$4952026-05-019856415.4x

PUT$5152026-05-016704514.9x

PUT$4952026-05-08114814.2x

PUT$1852026-05-2268513.6x

High Volume Contracts — Vol > 500 (10 contracts)

TypeStrikeExpiryVolume

CALL$6002026-05-1514,316

PUT$4002026-05-0113,335

PUT$2802026-05-0112,621

CALL$5002026-05-0111,290

CALL$5502026-05-1510,672

CALL$5502026-05-0110,317

PUT$2002026-06-1810,123

PUT$3002026-05-089,563

PUT$352026-05-087,100

CALL$6002026-05-015,447

P/C OI RATIO

1.27

TOTAL OI

1,129,006

CALL OI

498,147

PUT OI

630,859

Put/Call volume ratio: 1.04 (bearish)
Total options volume: 359,484 (calls 175,835 / puts 183,649)
Top unusual: PUT $510.0 exp 2026-05-01 — vol/OI 50.3x
49 unusual strikes detected (21C / 28P)

👤 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.

9% BUY

91% SELL

SHARES BOUGHT (6m)

43,176

SHARES SOLD (6m)

422,205

NET INSIDER FLOW

-379,029

FORM 4 FILINGS (90d)

Recent Insider Transactions (1 buys / 8 sells / 1 grants)

TypeInsiderSharesDate

SELLCORDANO MICHAEL D3,4072026-04-14

SELLSADANA SUMIT24,0002026-04-10

SELLCORDANO MICHAEL D3,4072026-04-09

SELLARNZEN APRIL S40,0002026-04-01

GRANTLIU TEYIN MARK972026-03-31

SELLSADANA SUMIT25,0002026-02-02

SELLRAY MICHAEL CHARLES12,2682026-01-27

SELLBHATIA MANISH H26,6232026-01-22

BUYLIU TEYIN MARK23,2002026-01-14

SELLALLEN SCOTT R2,0002026-01-06

Insider buying: 43,176 shares
Insider selling: 422,205 shares
11 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

82.2%

ACCUMULATION vs DISTRIBUTION

30% ACCUMULATING

70% DISTRIBUTING

NET SHARES FLOW

+4,564,588

FLOW SCORE

+0.05

ADDING

SELLING

Institutional Position Changes (QoQ)

ActionInstitution% HeldQoQ ΔShares Δ

▲▲ HEAVY BUYNORGES BANK2.00%+40.3%+6,470,160

▲ ADDINGBlackrock Inc.8.93%+7.3%+6,877,315

▲ ADDINGMorgan Stanley1.45%+5.1%+794,166

▬ HOLDVanguard Group Inc9.45%+1.9%+1,956,975

▬ HOLDState Street Corporation4.68%+2.1%+1,090,021

▬ HOLDGeode Capital Management, LLC2.31%-0.2%-41,663

▬ HOLDFMR, LLC3.51%-1.2%-468,761

▼ TRIMMINGCapital International Investors1.96%-5.6%-1,315,857

▼ TRIMMINGPrimecap Management Company2.20%-16.4%-4,860,530

▼ TRIMMINGCapital World Investors5.17%-9.2%-5,937,238

ETF & Mutual Fund Flow (0 adding / 2 selling)

ActionFundQoQ ΔShares Δ

▬ HOLDVANGUARD INDEX FUNDS-Vanguard Total Stock Mar+0.4%+137,392

▬ HOLDVANGUARD INDEX FUNDS-Vanguard 500 Index Fund+2.5%+693,055

▬ HOLDInvesco QQQ Trust, Series 1-2.4%-576,076

▬ HOLDGROWTH FUND OF AMERICA-1.9%-346,537

▼▼ HEAVY SEVANGUARD CHESTER FUNDS-Vanguard PRIMECAP Fund-20.4%-3,760,704

▬ HOLDFidelity Concord Street Trust-Fidelity 500 In+0.2%+24,242

▬ HOLDiShares Trust-iShares Core S&P 500 ETF-0.9%-135,779

▬ HOLDSPDR S&P 500 ETF TRUST-State Street SPDR S&P -1.2%-157,186

▬ HOLDVANGUARD INDEX FUNDS-Vanguard Value Index Fun+3.0%+305,538

▼▼ HEAVY SEAMERICAN BALANCED FUND-35.9%-5,360,115

Institutional ownership: 82.2%
Smart money flow: 3 adding / 3 selling / 4 hold
Net shares added by institutions: +4,564,588
Biggest mover: Blackrock Inc. added 6,877,315 shares (+7.3%)

🕶 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

3.2%

DAYS TO COVER

0.7

SI CHANGE (MoM)

↑ 23.5%

SQUEEZE RISK

MINIMAL

SHARES SHORT

36,327,421

PRIOR MONTH

29,425,323

FLOAT SHARES

1,123,561,435

AVG VOLUME

41,416,403

Short interest: 3.2% of float
Days to cover: 0.7
Short interest MoM: ↑ 23.5%
Squeeze risk: MINIMAL

📡 Data Sources 数据来源

Options Flow

LEAN BEARISH (80%)

Insider Trading

BEARISH (90%)

Smart Money Flow

LEAN BULLISH (75%)

Short Interest

NEUTRAL (60%)

📋 Summary 综合摘要

[dark_pool] Short interest: 3.2% of float
[dark_pool] Days to cover: 0.7
[institutional] Institutional ownership: 82.2%
[institutional] Smart money flow: 3 adding / 3 selling / 4 hold
[options_flow] Put/Call volume ratio: 1.04 (bearish)
[options_flow] Total options volume: 359,484 (calls 175,835 / puts 183,649)
[insider] Insider buying: 43,176 shares
[insider] Insider selling: 422,205 shares