Whale Activity Tracker

ALAB

Astera Labs, Inc.
2026-05-01 06:33
$194.74 -1.07% $33.4B
NEUTRAL — WATCH
No clear whale direction for ALAB. Bullish and bearish signals roughly cancel out. 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 79.6% with 6 of 10 top holders actively accumulating this quarter.
Action Plan
Options Flow
期权
BULLISH
0.54
Insider
内部交易
NEUTRAL
Net Sell
Smart Money
机构流向
LEAN BULLISH
60% accum
Short Interest
做空
LEAN BEARISH
11.1%
NEUTRAL
5.6/10
Whale Activity Rating
Distribution Neutral Accumulation
Options Flow: BULLISH
Insider: NEUTRAL
Institutional: LEAN BULLISH
Dark Pool: LEAN BEARISH
4/4 sources | Confidence: 76%
📈 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)
0.54
BULLISH
CALL VOLUME
10,983
PUT VOLUME
5,938
TOTAL VOLUME
16,921
UNUSUAL STRIKES
0
High Volume Contracts — Vol > 500 (5 contracts)
TypeStrikeExpiryVolume
CALL$2002026-05-011,595
CALL$1982026-05-011,004
CALL$2002026-05-08689
PUT$1802026-05-01514
CALL$1952026-05-01502
P/C OI RATIO
1.0
TOTAL OI
24
CALL OI
0
PUT OI
24
👤 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)
19
Recent Insider Transactions (0 buys / 10 sells / 0 grants)
TypeInsiderSharesDate
SELLDYCKERHOFF STEFAN A24,9982026-04-20
SELLMOHAN JITENDRA335,8812026-04-20
SELLMOHAN JITENDRA2,9672026-04-15
SELLMOHAN JITENDRA123,7502026-04-10
SELLMAZZARA PHILIP10,0002026-04-01
SELLALBA MANUEL183,0002026-04-01
SELLMOHAN JITENDRA157,5002026-03-17
SELLLAZAR JACK R2,5002026-03-16
SELLLAZAR JACK R7,5002026-03-05
SELLMAZZARA PHILIP10,0002026-03-02
🏦 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
79.6%
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, LP0.94%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 (1 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
▬ HOLDFidelity Mt. Vernon Street Trust-Fidelity Gro-4.0%-101,418
▬ HOLDiShares Trust-iShares Semiconductor ETF-2.5%-61,133
▬ HOLDFidelity Select Portfolios-Technology Portfol0.0%0
▬ HOLDVANGUARD INDEX FUNDS-Vanguard Small-Cap Growt-1.9%-33,333
★ NEW POSIVanEck ETF Trust-VanEck Semiconductor ETFNEW+838,105
▬ HOLDVANGUARD WORLD FUND-Vanguard Information Tech+2.5%+35,407
🕶 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
5,476,722
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
BULLISH (80%)
Insider Trading
NEUTRAL (90%)
Smart Money Flow
LEAN BULLISH (75%)
Short Interest
LEAN BEARISH (60%)
📋 Summary 综合摘要