Whale Tracker

NEUTRAL — WATCH

No clear whale direction for SNDK. Bullish and bearish signals roughly cancel out. Insiders are net buyers (25,029 shares bought vs 7,796 sold) — bullish conviction from management. Strong institutional ownership at 80.7% with 7 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)

1.98

BEARISH

CALL VOLUME

23,889

PUT VOLUME

47,302

TOTAL VOLUME

71,191

UNUSUAL STRIKES

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

TypeStrikeExpiryVolOIRatio

PUT$17002026-06-261571157.0x

PUT$7902026-06-26243381.0x

PUT$7952026-06-26163723.3x

PUT$7552026-06-2614114.0x

PUT$9502026-06-052,39019812.1x

CALL$19602026-06-051891611.8x

PUT$8352026-07-0210110.0x

PUT$16002026-07-02207219.9x

PUT$10902026-06-05442469.6x

CALL$21102026-06-05225268.7x

High Volume Contracts — Vol > 500 (10 contracts)

TypeStrikeExpiryVolume

PUT$9502026-06-052,390

PUT$9002026-06-051,974

PUT$15502026-06-261,510

PUT$14252026-06-261,503

PUT$13002026-06-051,429

PUT$14002026-06-051,305

PUT$13802026-06-051,129

PUT$12502026-07-171,102

CALL$18002026-06-051,038

CALL$20002026-06-051,038

P/C OI RATIO

1.7

TOTAL OI

276,631

CALL OI

102,318

PUT OI

174,313

Put/Call volume ratio: 1.98 (bearish)
Total options volume: 71,191 (calls 23,889 / puts 47,302)
Top unusual: PUT $1700.0 exp 2026-06-26 — vol/OI 157.0x
42 unusual strikes detected (15C / 27P)

👤 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.

76% BUY

24% SELL

SHARES BOUGHT (6m)

25,029

SHARES SOLD (6m)

7,796

NET INSIDER FLOW

+17,233

FORM 4 FILINGS (90d)

Recent Insider Transactions (0 buys / 4 sells / 6 grants)

TypeInsiderSharesDate

SELLPOKORNY MICHAEL2,4462026-05-12

SELLSAYINER NECIP5792026-05-08

SELLSUZUKI MIYUKI3,5002026-02-25

GRANTBRADLEY ALEXANDER R.8632025-12-30

SELLSAYINER NECIP1,2712025-12-03

GRANTSAYINER NECIP9792025-11-18

GRANTCAULFIELD THOMAS9792025-11-18

GRANTKUMAR DEVINDER9792025-11-18

GRANTSHOOK ELLYN J9792025-11-18

GRANTSUZUKI MIYUKI9792025-11-18

Insider buying: 25,029 shares
Insider selling: 7,796 shares
15 Form 4 filings in last 90 days
Net insider BUYING — bullish 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

80.7%

ACCUMULATION vs DISTRIBUTION

70% ACCUMULATING

30% DISTRIBUTING

NET SHARES FLOW

+1,843,914

FLOW SCORE

+0.23

ADDING

SELLING

Institutional Position Changes (QoQ)

ActionInstitution% HeldQoQ ΔShares Δ

★ NEW POSITIONVanguard Capital Management LLC6.43%NEW+4,763,059

★ NEW POSITIONVanguard Portfolio Management LLC2.42%NEW+1,788,243

★ NEW POSITIONGoldman Sachs Group Inc1.38%NEW+1,383,889

★ NEW POSITIONJane Street Group, LLC1.21%NEW+941,507

▲ ADDINGBlackrock Inc.7.03%+8.1%+778,646

▲ ADDINGGeode Capital Management, LLC2.84%+15.2%+556,803

▲ ADDINGState Street Corporation3.76%+5.5%+292,081

▬ HOLDMorgan Stanley1.92%+2.5%+68,715

▼ TRIMMINGArrowstreet Capital, Limited Partnership1.91%-18.8%-653,825

▼▼ HEAVY SELLFMR, LLC9.04%-37.6%-8,075,204

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

ActionFundQoQ ΔShares Δ

▬ HOLDVANGUARD INDEX FUNDS-Vanguard Total Stock Mar-0.1%-2,621

★ NEW POSIVANGUARD INDEX FUNDS-Vanguard 500 Index FundNEW+1,755,738

▼▼ HEAVY SEFidelity Mt. Vernon Street Trust-Fidelity Gro-22.5%-1,015,676

▬ HOLDVANGUARD INDEX FUNDS-Vanguard Small-Cap Index-3.8%-123,768

★ NEW POSIInvesco QQQ Trust, Series 1NEW+1,579,598

▬ HOLDiShares Trust-iShares Core S&P 500 ETF+0.6%+10,820

▬ HOLDFidelity Concord Street Trust-Fidelity 500 In+0.3%+6,574

▬ HOLDSPDR S&P 500 ETF TRUST-State Street SPDR S&P +2.5%+43,948

▬ HOLDVANGUARD WORLD FUND-Vanguard Information Tech+2.5%+32,184

▬ HOLDSELECT SECTOR SPDR TRT-State Street Technolog+2.4%+26,011

Institutional ownership: 80.7%
Smart money flow: 7 adding / 2 selling / 1 hold
Net shares added by institutions: +1,843,914
Biggest mover: FMR, LLC sold 8,075,204 shares (-37.6%)

🕶 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

9.6%

DAYS TO COVER

0.6

SI CHANGE (MoM)

↓ 6.3%

SQUEEZE RISK

LOW

SHARES SHORT

9,135,603

PRIOR MONTH

9,750,678

FLOAT SHARES

146,006,135

AVG VOLUME

16,312,715

Short interest: 9.6% of float
Days to cover: 0.6
Short interest MoM: ↓ 6.3%
Squeeze risk: LOW

📡 Data Sources 数据来源

Options Flow

BEARISH (80%)

Insider Trading

BULLISH (90%)

Smart Money Flow

LEAN BULLISH (75%)

Short Interest

NEUTRAL (60%)

📋 Summary 综合摘要

[dark_pool] Short interest: 9.6% of float
[dark_pool] Days to cover: 0.6
[institutional] Institutional ownership: 80.7%
[institutional] Smart money flow: 7 adding / 2 selling / 1 hold
[insider] Insider buying: 25,029 shares
[insider] Insider selling: 7,796 shares
[options_flow] Put/Call volume ratio: 1.98 (bearish)
[options_flow] Total options volume: 71,191 (calls 23,889 / puts 47,302)