Whale Tracker

NEUTRAL — WATCH

No clear whale direction for MU. Bullish and bearish signals roughly cancel out. Insiders are net sellers (258,806 shares sold vs 23,676 bought) — management reducing exposure. Strong institutional ownership at 81.6% with 4 of 10 top holders actively accumulating this quarter.

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)

0.89

LEAN BULLISH

CALL VOLUME

514,397

PUT VOLUME

457,624

TOTAL VOLUME

972,021

UNUSUAL STRIKES

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

TypeStrikeExpiryVolOIRatio

PUT$10402026-06-262,0326232.8x

PUT$9852026-06-1211,62537830.8x

PUT$4452026-06-265002025.0x

CALL$9952026-06-1216,94687319.4x

CALL$18702026-06-183,92222017.8x

CALL$20802026-07-1783516.6x

PUT$9902026-06-1213,56683516.2x

PUT$9952026-06-127,91350015.8x

PUT$9802026-06-129,37371713.1x

CALL$21302026-07-171441113.1x

High Volume Contracts — Vol > 500 (10 contracts)

TypeStrikeExpiryVolume

CALL$10002026-06-1266,805

CALL$10502026-06-1233,897

CALL$10202026-06-1224,135

CALL$9902026-06-1219,608

CALL$10502026-06-2618,949

CALL$10102026-06-1217,930

CALL$9952026-06-1216,946

PUT$5402026-06-1815,637

PUT$5302026-06-1815,373

PUT$4702026-06-1815,037

P/C OI RATIO

1.69

TOTAL OI

2,149,924

CALL OI

798,948

PUT OI

1,350,976

Put/Call volume ratio: 0.89 (bullish)
Total options volume: 972,021 (calls 514,397 / puts 457,624)
Top unusual: PUT $1040.0 exp 2026-06-26 — vol/OI 32.8x
89 unusual strikes detected (48C / 41P)

👤 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.

8% BUY

92% SELL

SHARES BOUGHT (6m)

23,676

SHARES SOLD (6m)

258,806

NET INSIDER FLOW

-235,130

FORM 4 FILINGS (90d)

Recent Insider Transactions (0 buys / 9 sells / 1 grants)

TypeInsiderSharesDate

SELLMEHROTRA SANJAY37,4392026-05-29

SELLMEHROTRA SANJAY2,5612026-05-29

SELLGOMO STEVEN J2,0002026-05-11

SELLRAY MICHAEL CHARLES7,6012026-05-01

SELLMEHROTRA SANJAY40,0002026-05-01

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

Insider buying: 23,676 shares
Insider selling: 258,806 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

81.6%

ACCUMULATION vs DISTRIBUTION

40% ACCUMULATING

60% DISTRIBUTING

NET SHARES FLOW

+27,861,911

FLOW SCORE

+0.14

ADDING

SELLING

Institutional Position Changes (QoQ)

ActionInstitution% HeldQoQ ΔShares Δ

★ NEW POSITIONVanguard Capital Management LLC6.49%NEW+36,568,641

★ NEW POSITIONVanguard Portfolio Management LLC2.04%NEW+11,512,307

▲ ADDINGJPMORGAN CHASE & CO1.40%+19.9%+2,621,542

▲ ADDINGGeode Capital Management, LLC2.43%+5.5%+1,435,072

▬ HOLDBlackrock Inc.9.15%+2.4%+2,447,023

▬ HOLDMorgan Stanley1.49%+2.7%+445,972

▬ HOLDState Street Corporation4.63%-1.0%-511,686

▼ TRIMMINGPrimecap Management Company1.94%-11.8%-2,920,858

▼ TRIMMINGFMR, LLC2.84%-19.0%-7,543,414

▼▼ HEAVY SELLCapital World Investors3.73%-27.8%-16,192,688

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

ActionFundQoQ ΔShares Δ

▬ HOLDVANGUARD INDEX FUNDS-Vanguard Total Stock Mar+1.1%+374,882

▬ HOLDVANGUARD INDEX FUNDS-Vanguard 500 Index Fund+1.1%+297,206

▬ HOLDInvesco QQQ Trust, Series 1+1.6%+379,366

▬ HOLDiShares Trust-iShares Core S&P 500 ETF+0.6%+82,510

▬ HOLDFidelity Concord Street Trust-Fidelity 500 In+0.3%+50,305

▬ HOLDSPDR S&P 500 ETF TRUST-State Street SPDR S&P +2.6%+335,692

▼ TRIMMINGVANGUARD CHESTER FUNDS-Vanguard PRIMECAP Fund-12.9%-1,888,509

▼ TRIMMINGGROWTH FUND OF AMERICA-14.9%-2,104,053

▬ HOLDVANGUARD INDEX FUNDS-Vanguard Value Index Fun+0.5%+53,853

▼▼ HEAVY SEAMERICAN BALANCED FUND-32.9%-4,905,341

Institutional ownership: 81.6%
Smart money flow: 4 adding / 3 selling / 3 hold
Net shares added by institutions: +27,861,911
Biggest mover: Vanguard Capital Management LLC added 36,568,641 shares (+100.0%)

🕶 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

3.3%

DAYS TO COVER

0.7

SI CHANGE (MoM)

↑ 0.7%

SQUEEZE RISK

MINIMAL

SHARES SHORT

37,549,121

PRIOR MONTH

37,273,548

FLOAT SHARES

1,123,572,712

AVG VOLUME

51,165,353

Short interest: 3.3% of float
Days to cover: 0.7
Short interest MoM: ↑ 0.7%
Squeeze risk: MINIMAL

📡 Data Sources 数据来源

Options Flow

LEAN BULLISH (80%)

Insider Trading

BEARISH (90%)

Smart Money Flow

LEAN BULLISH (75%)

Short Interest

NEUTRAL (60%)

📋 Summary 综合摘要

[dark_pool] Short interest: 3.3% of float
[dark_pool] Days to cover: 0.7
[institutional] Institutional ownership: 81.6%
[institutional] Smart money flow: 4 adding / 3 selling / 3 hold
[options_flow] Put/Call volume ratio: 0.89 (bullish)
[options_flow] Total options volume: 972,021 (calls 514,397 / puts 457,624)
[insider] Insider buying: 23,676 shares
[insider] Insider selling: 258,806 shares