Whale Tracker

NEUTRAL — WATCH

No clear whale direction for MU. Bullish and bearish signals roughly cancel out. Insiders are net sellers (453,505 shares sold vs 53,445 bought) — management reducing exposure. Strong institutional ownership at 83.3%, but 3 of 10 top holders are distributing.

Action Plan

Hold existing positions — no strong directional signal
Wait for clearer whale activity before adding
Monitor next earnings for institutional positioning changes

📈 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)

1.02

LEAN BEARISH

CALL VOLUME

138,908

PUT VOLUME

141,335

TOTAL VOLUME

280,243

UNUSUAL STRIKES

Unusual Strikes — Vol/OI > 3x (0C / 10P)

TypeStrikeExpiryVolOIRatio

PUT$502026-05-155,31332166.0x

PUT$2622026-04-243112155.5x

PUT$452026-05-155,00033151.5x

PUT$402026-05-155,00043116.3x

PUT$2782026-04-2450150.0x

PUT$4902026-05-222401024.0x

PUT$5402026-04-2420120.0x

PUT$4652026-04-242,46512919.1x

PUT$4682026-04-243121718.4x

PUT$2582026-04-2487517.4x

High Volume Contracts — Vol > 500 (10 contracts)

TypeStrikeExpiryVolume

CALL$5002026-04-2415,087

CALL$4602026-04-248,524

PUT$4202026-04-247,541

PUT$352026-05-087,100

PUT$4402026-04-246,250

PUT$4202026-05-015,626

PUT$502026-05-155,313

PUT$2652026-04-245,216

CALL$4702026-04-245,120

CALL$4602026-05-155,078

P/C OI RATIO

1.21

TOTAL OI

666,732

CALL OI

301,796

PUT OI

364,936

Put/Call volume ratio: 1.02 (bearish)
Total options volume: 280,243 (calls 138,908 / puts 141,335)
Top unusual: PUT $50.0 exp 2026-05-15 — vol/OI 166.0x
46 unusual strikes detected (16C / 30P)

👤 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.

11% BUY

89% SELL

SHARES BOUGHT (6m)

53,445

SHARES SOLD (6m)

453,505

NET INSIDER FLOW

-400,060

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: 53,445 shares
Insider selling: 453,505 shares
12 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

83.3%

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 / 3 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

▼ TRIMMINGAMERICAN FUNDS FUNDAMENTAL INVESTORS-17.3%-3,810,854

▼▼ HEAVY SEAMERICAN BALANCED FUND-21.1%-3,980,246

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

▬ HOLDiShares Trust-iShares Core S&P 500 ETF-0.9%-137,063

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

▬ HOLDSPDR S&P 500 ETF TRUST-State Street SPDR S&P -1.9%-262,693

Institutional ownership: 83.3%
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

2.8%

DAYS TO COVER

0.7

SI CHANGE (MoM)

↑ 6.8%

SQUEEZE RISK

MINIMAL

SHARES SHORT

31,355,866

PRIOR MONTH

29,367,414

FLOAT SHARES

1,123,561,435

AVG VOLUME

41,993,800

Short interest: 2.8% of float
Days to cover: 0.7
Short interest MoM: ↑ 6.8%
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: 2.8% of float
[dark_pool] Days to cover: 0.7
[institutional] Institutional ownership: 83.3%
[institutional] Smart money flow: 3 adding / 3 selling / 4 hold
[options_flow] Put/Call volume ratio: 1.02 (bearish)
[options_flow] Total options volume: 280,243 (calls 138,908 / puts 141,335)
[insider] Insider buying: 53,445 shares
[insider] Insider selling: 453,505 shares