Whale Tracker

LEAN BEARISH

Whales showing caution on WDC. Distribution signals outweigh accumulation. Insiders are net sellers (181,021 shares sold vs 23,145 bought) — management reducing exposure. Strong institutional ownership at 101.7%, but 2 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)

1.39

BEARISH

CALL VOLUME

14,711

PUT VOLUME

20,433

TOTAL VOLUME

35,144

UNUSUAL STRIKES

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

TypeStrikeExpiryVolOIRatio

PUT$2602026-06-055051145.9x

PUT$4382026-05-15132914.7x

PUT$4952026-05-2922211.0x

PUT$4852026-05-1520210.0x

PUT$4422026-05-15109129.1x

PUT$2602026-05-29503569.0x

PUT$3352026-05-29512756.8x

PUT$4122026-05-15105166.6x

PUT$4252026-05-15264455.9x

PUT$5202026-05-292045.0x

High Volume Contracts — Vol > 500 (10 contracts)

TypeStrikeExpiryVolume

PUT$3052026-05-08734

PUT$3802026-05-15671

CALL$3252026-05-08596

PUT$4002026-05-15590

CALL$5002026-05-08579

CALL$4752026-05-08570

CALL$5002026-05-15536

CALL$6402026-05-08516

PUT$3352026-05-29512

PUT$2602026-06-05505

P/C OI RATIO

0.92

TOTAL OI

71,965

CALL OI

37,515

PUT OI

34,450

Put/Call volume ratio: 1.39 (bearish)
Total options volume: 35,144 (calls 14,711 / puts 20,433)
Top unusual: PUT $260.0 exp 2026-06-05 — vol/OI 45.9x
11 unusual strikes detected (0C / 11P)

👤 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)

23,145

SHARES SOLD (6m)

181,021

NET INSIDER FLOW

-157,876

FORM 4 FILINGS (90d)

Recent Insider Transactions (0 buys / 8 sells / 0 grants)

TypeInsiderSharesDate

SELLGUBBI VIDYADHARA K4,6742026-05-04

SELLTAN IRVING20,0002026-05-01

SELLTREGILLIS CYNTHIA LOCK3632026-04-21

SELLGUBBI VIDYADHARA K8,5182026-03-06

SELLGUBBI VIDYADHARA K10,1482026-03-04

SELLTREGILLIS CYNTHIA LOCK9,3242026-03-04

SELLCOLE MARTIN I6,0002026-03-02

SELLTREGILLIS CYNTHIA LOCK2142026-02-26

Insider buying: 23,145 shares
Insider selling: 181,021 shares
38 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

101.7%

ACCUMULATION vs DISTRIBUTION

20% ACCUMULATING

80% DISTRIBUTING

NET SHARES FLOW

-9,771,051

FLOW SCORE

+0.05

ADDING

SELLING

Institutional Position Changes (QoQ)

ActionInstitution% HeldQoQ ΔShares Δ

▲▲ HEAVY BUYFMR, LLC9.80%+42.2%+10,037,174

▲ ADDINGMorgan Stanley2.60%+6.5%+541,973

▬ HOLDBlackrock Inc.10.30%+2.3%+794,963

▬ HOLDState Street Corporation4.55%+1.5%+233,483

▬ HOLDWCM Investment Management, LLC1.94%-1.3%-87,444

▬ HOLDGeode Capital Management, LLC2.69%-1.4%-131,799

▬ HOLDAmeriprise Financial, Inc.2.47%-1.9%-163,253

▬ HOLDVanguard Group Inc12.29%-2.2%-934,925

▼▼ HEAVY SELLJPMORGAN CHASE & CO4.15%-40.5%-9,742,987

▼▼ HEAVY SELLBank of America Corporation3.49%-46.1%-10,318,236

ETF & Mutual Fund Flow (2 adding / 1 selling)

ActionFundQoQ ΔShares Δ

▬ HOLDVANGUARD INDEX FUNDS-Vanguard Total Stock Mar-1.7%-182,496

▬ HOLDVANGUARD INDEX FUNDS-Vanguard 500 Index Fund+0.7%+61,634

▬ HOLDVANGUARD INDEX FUNDS-Vanguard Mid-Cap Index F-3.0%-231,734

▬ HOLDInvesco QQQ Trust, Series 1-1.8%-130,915

▬ HOLDiShares Trust-iShares Core S&P 500 ETF0.0%0

▬ HOLDFidelity Concord Street Trust-Fidelity 500 In-0.5%-21,320

▬ HOLDSPDR S&P 500 ETF TRUST-State Street SPDR S&P -2.5%-100,290

★ NEW POSIAMERICAN BALANCED FUNDNEW+1,899,937

★ NEW POSIJPMorgan Trust II-JPMorgan Large Cap Growth FNEW+1,841,308

▼▼ HEAVY SEColumbia Fd.s Series TRT II-Columbia Seligman-28.2%-1,345,968

Institutional ownership: 101.7%
Smart money flow: 2 adding / 2 selling / 6 hold
Net shares removed by institutions: -9,771,051
Biggest mover: Bank of America Corporation sold 10,318,236 shares (-46.1%)

🕶 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

8.9%

DAYS TO COVER

3.1

SI CHANGE (MoM)

↓ 2.9%

SQUEEZE RISK

LOW

SHARES SHORT

26,758,181

PRIOR MONTH

27,567,965

FLOAT SHARES

342,234,888

AVG VOLUME

8,740,122

Short interest: 8.9% of float
Days to cover: 3.1
Short interest MoM: ↓ 2.9%
Squeeze risk: LOW

📡 Data Sources 数据来源

Options Flow

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: 8.9% of float
[dark_pool] Days to cover: 3.1
[institutional] Institutional ownership: 101.7%
[institutional] Smart money flow: 2 adding / 2 selling / 6 hold
[options_flow] Put/Call volume ratio: 1.39 (bearish)
[options_flow] Total options volume: 35,144 (calls 14,711 / puts 20,433)
[insider] Insider buying: 23,145 shares
[insider] Insider selling: 181,021 shares