Whale Activity Tracker

ALAB

Astera Labs, Inc.
2026-03-25 05:06
$121.76 -1.70% $20.7B
NEUTRAL — WATCH
No clear whale direction for ALAB. Bullish and bearish signals roughly cancel out. Short interest at 10.7% of float — moderate bearish positioning. Insiders are net buyers (796,974 shares bought vs 786,760 sold) — bullish conviction from management. Strong institutional ownership at 79.5% with 6 of 10 top holders actively accumulating this quarter.
Action Plan
Options Flow
期权
NEUTRAL
1.03
Insider
内部交易
LEAN BULLISH
Net Buy
Smart Money
机构流向
LEAN BULLISH
60% accum
Short Interest
做空
BEARISH
10.7%
NEUTRAL
5.3/10
Whale Activity Rating
Distribution Neutral Accumulation
Options Flow: NEUTRAL
Insider: LEAN BULLISH
Institutional: LEAN BULLISH
Dark Pool: BEARISH
4/4 sources | Confidence: 72%
📈 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)
1.03
NEUTRAL
CALL VOLUME
3,964
PUT VOLUME
4,086
TOTAL VOLUME
8,050
UNUSUAL STRIKES
1
Unusual Strikes — Vol/OI > 3x (0C / 1P)
TypeStrikeExpiryVolOIRatio
PUT$1952026-04-171,6702083.5x
High Volume Contracts — Vol > 500 (1 contracts)
TypeStrikeExpiryVolume
PUT$1952026-04-171,670
P/C OI RATIO
0.88
TOTAL OI
71,198
CALL OI
37,916
PUT OI
33,282
👤 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.
50% BUY
50% SELL
SHARES BOUGHT (6m)
796,974
SHARES SOLD (6m)
786,760
NET INSIDER FLOW
+10,214
FORM 4 FILINGS (90d)
14
Recent Insider Transactions (0 buys / 8 sells / 2 grants)
TypeInsiderSharesDate
SELLMOHAN JITENDRA157,5002026-03-17
SELLLAZAR JACK R2,5002026-03-16
SELLLAZAR JACK R7,5002026-03-05
SELLMAZZARA PHILIP10,0002026-03-02
SELLMOHAN JITENDRA94,9712026-02-17
SELLTATE MICHAEL TRUETT12,0012026-02-17
SELLGAJENDRA SANJAY94,9712026-02-17
SELLMAZZARA PHILIP4,8492026-02-17
GRANTTATE MICHAEL TRUETT11,7872026-02-06
GRANTGAJENDRA SANJAY26,5222026-02-06
🏦 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
79.5%
ACCUMULATION vs DISTRIBUTION
60% ACCUMULATING
40% DISTRIBUTING
NET SHARES FLOW
+5,529,891
FLOW SCORE
+0.31
ADDING
6
SELLING
1
Institutional Position Changes (QoQ)
ActionInstitution% HeldQoQ ΔShares Δ
★ NEW POSITIONAtreides Management, LP0.95%NEW+1,549,144
▲▲ HEAVY BUYState Street Corporation1.82%+32.5%+760,330
▲▲ HEAVY BUYMorgan Stanley1.14%+33.0%+479,980
▲▲ HEAVY BUYFred Alger Management, LLC1.14%+25.5%+393,226
▲ ADDINGBlackrock Inc.7.62%+15.5%+1,739,437
▲ ADDINGFMR, LLC14.88%+5.2%+1,254,586
▬ HOLDGeode Capital Management, LLC1.43%+4.5%+104,823
▬ HOLDVanguard Group Inc8.12%+0.6%+83,836
▬ HOLDShaw D.E. & Co., Inc.1.44%-3.7%-94,753
▼▼ HEAVY SELLAlliancebernstein L.P.1.28%-25.4%-740,718
ETF & Mutual Fund Flow (0 adding / 1 selling)
ActionFundQoQ ΔShares Δ
▬ HOLDFidelity Select Portfolios-Select Semiconduct-2.2%-137,192
▬ HOLDVANGUARD INDEX FUNDS-Vanguard Total Stock Mar+1.4%+59,894
▬ HOLDVANGUARD INDEX FUNDS-Vanguard Small-Cap Index-2.7%-85,730
▼ TRIMMINGFidelity Securities Fund-Fidelity Blue Chip G-5.1%-138,306
▬ HOLDFidelity Mt. Vernon Street Trust-Fidelity Gro0.0%0
▬ HOLDiShares Trust-iShares Semiconductor ETF+3.4%+78,717
▬ HOLDFidelity Select Portfolios-Technology Portfol+3.6%+78,730
▬ HOLDVANGUARD INDEX FUNDS-Vanguard Small-Cap Growt-1.9%-33,333
▬ HOLDVANGUARD WORLD FUND-Vanguard Information Tech+0.5%+6,573
▬ HOLDVANGUARD INDEX FUNDS-Vanguard Extended Market+2.3%+32,061
🕶 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
10.7%
DAYS TO COVER
2.9
SI CHANGE (MoM)
↑ 16.2%
SQUEEZE RISK
MODERATE
SHARES SHORT
13,516,520
PRIOR MONTH
11,632,347
FLOAT SHARES
140,738,458
AVG VOLUME
5,102,755
Elevated short interest — bears have a notable position. Watch for SI trend direction as the key signal.
📡 Data Sources 数据来源
Options Flow
NEUTRAL (65%)
Insider Trading
LEAN BULLISH (90%)
Smart Money Flow
LEAN BULLISH (75%)
Short Interest
BEARISH (60%)
📋 Summary 综合摘要