Whale Tracker

LEAN BULLISH

Net positive whale activity for ALAB. Smart money shows interest, but signals are mixed. Short interest at 11.1% of float — moderate bearish positioning. Insiders are net sellers (1,457,356 shares sold vs 796,974 bought) — management reducing exposure. Strong institutional ownership at 79.4% with 6 of 10 top holders actively accumulating this quarter.

Action Plan

Consider building a position on pullbacks
Set stop-loss below key support level
Re-evaluate if insider selling accelerates

📈 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)

0.39

BULLISH

CALL VOLUME

15,345

PUT VOLUME

6,007

TOTAL VOLUME

21,352

UNUSUAL STRIKES

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

TypeStrikeExpiryVolOIRatio

CALL$3002026-05-154,66516129.0x

PUT$2102026-05-1542221.0x

PUT$1582026-05-1520120.0x

CALL$2152026-05-011,9412039.6x

PUT$1852026-05-08110166.9x

PUT$1582026-05-0870125.8x

CALL$1782026-05-081025.0x

PUT$1042026-05-22414.0x

CALL$2152026-05-0841123.4x

PUT$1802026-05-08115343.4x

High Volume Contracts — Vol > 500 (5 contracts)

TypeStrikeExpiryVolume

CALL$3002026-05-154,665

CALL$2152026-05-011,941

CALL$2002026-05-151,035

CALL$2102026-05-01917

CALL$2402026-05-01525

P/C OI RATIO

0.82

TOTAL OI

87,975

CALL OI

48,304

PUT OI

39,671

Put/Call volume ratio: 0.39 (bullish)
Total options volume: 21,352 (calls 15,345 / puts 6,007)
Top unusual: CALL $300.0 exp 2026-05-15 — vol/OI 29.0x
13 unusual strikes detected (5C / 8P)

👤 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.

35% BUY

65% SELL

SHARES BOUGHT (6m)

796,974

SHARES SOLD (6m)

1,457,356

NET INSIDER FLOW

-660,382

FORM 4 FILINGS (90d)

Recent Insider Transactions (0 buys / 10 sells / 0 grants)

TypeInsiderSharesDate

SELLMOHAN JITENDRA335,8812026-04-20

SELLDYCKERHOFF STEFAN A24,9982026-04-20

SELLMOHAN JITENDRA2,9672026-04-15

SELLMOHAN JITENDRA123,7502026-04-10

SELLALBA MANUEL183,0002026-04-01

SELLMAZZARA PHILIP10,0002026-04-01

SELLMOHAN JITENDRA157,5002026-03-17

SELLLAZAR JACK R2,5002026-03-16

SELLLAZAR JACK R7,5002026-03-05

SELLMAZZARA PHILIP10,0002026-03-02

Insider buying: 796,974 shares
Insider selling: 1,457,356 shares
19 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

79.4%

ACCUMULATION vs DISTRIBUTION

60% ACCUMULATING

40% DISTRIBUTING

NET SHARES FLOW

+5,529,891

FLOW SCORE

+0.31

ADDING

SELLING

Institutional Position Changes (QoQ)

ActionInstitution% HeldQoQ ΔShares Δ

★ NEW POSITIONAtreides Management, LP0.94%NEW+1,549,144

▲▲ HEAVY BUYState Street Corporation1.81%+32.5%+760,330

▲▲ HEAVY BUYMorgan Stanley1.13%+33.0%+479,980

▲▲ HEAVY BUYFred Alger Management, LLC1.13%+25.5%+393,226

▲ ADDINGBlackrock Inc.7.57%+15.5%+1,739,437

▲ ADDINGFMR, LLC14.79%+5.2%+1,254,586

▬ HOLDGeode Capital Management, LLC1.42%+4.5%+104,823

▬ HOLDVanguard Group Inc8.07%+0.6%+83,836

▬ HOLDShaw D.E. & Co., Inc.1.43%-3.7%-94,753

▼▼ HEAVY SELLAlliancebernstein L.P.1.27%-25.4%-740,718

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

ActionFundQoQ ΔShares Δ

▬ HOLDFidelity Select Portfolios-Select Semiconduct+4.6%+276,828

▬ HOLDVANGUARD INDEX FUNDS-Vanguard Total Stock Mar+1.4%+59,894

▬ HOLDVANGUARD INDEX FUNDS-Vanguard Small-Cap Index-2.7%-85,730

▬ HOLDFidelity Securities Fund-Fidelity Blue Chip G-0.8%-21,573

▬ HOLDiShares Trust-iShares Semiconductor ETF+2.3%+56,582

▬ HOLDFidelity Mt. Vernon Street Trust-Fidelity Gro-4.0%-101,418

▬ HOLDFidelity Select Portfolios-Technology Portfol0.0%0

▬ HOLDVANGUARD INDEX FUNDS-Vanguard Small-Cap Growt-1.9%-33,333

▬ HOLDVANGUARD INDEX FUNDS-Vanguard Extended Market+2.3%+32,061

▬ HOLDVANGUARD WORLD FUND-Vanguard Information Tech+0.5%+6,573

Institutional ownership: 79.4%
Smart money flow: 6 adding / 1 selling / 3 hold
Net shares added by institutions: +5,529,891
Biggest mover: Blackrock Inc. added 1,739,437 shares (+15.5%)

🕶 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

11.1%

DAYS TO COVER

2.9

SI CHANGE (MoM)

↑ 6.8%

SQUEEZE RISK

MODERATE

SHARES SHORT

14,440,640

PRIOR MONTH

13,516,520

FLOAT SHARES

140,360,581

AVG VOLUME

5,379,880

Elevated short interest — bears have a notable position. Watch for SI trend direction as the key signal.

Short interest: 11.1% of float
Days to cover: 2.9
Short interest MoM: ↑ 6.8%
Squeeze risk: MODERATE

📡 Data Sources 数据来源

Options Flow

BULLISH (80%)

Insider Trading

NEUTRAL (90%)

Smart Money Flow

LEAN BULLISH (75%)

Short Interest

LEAN BEARISH (60%)

📋 Summary 综合摘要

[dark_pool] Short interest: 11.1% of float
[dark_pool] Days to cover: 2.9
[institutional] Institutional ownership: 79.4%
[institutional] Smart money flow: 6 adding / 1 selling / 3 hold
[options_flow] Put/Call volume ratio: 0.39 (bullish)
[options_flow] Total options volume: 21,352 (calls 15,345 / puts 6,007)
[insider] Insider buying: 796,974 shares
[insider] Insider selling: 1,457,356 shares