Whale Activity Tracker

RMBS

Rambus Inc.
2026-05-19 06:32
$123.76 -2.59% $13.4B
STRONG BUY SIGNAL
Whales are aggressively accumulating RMBS. Multiple signals confirm institutional conviction. Insiders are net buyers (465,280 shares bought vs 81,560 sold) — bullish conviction from management. Strong institutional ownership at 99.1% with 7 of 10 top holders actively accumulating this quarter.
Action Plan
Options Flow
期权
BULLISH
0.39
Insider
内部交易
BULLISH
Net Buy
Smart Money
机构流向
LEAN BULLISH
70% accum
Short Interest
做空
LEAN BEARISH
8.6%
STRONG ACCUMULATION
7.5/10
Whale Activity Rating
Distribution Neutral Accumulation
Options Flow: BULLISH
Insider: BULLISH
Institutional: LEAN BULLISH
Dark Pool: LEAN BEARISH
4/4 sources | Confidence: 69%
📈 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
2,040
PUT VOLUME
793
TOTAL VOLUME
2,833
UNUSUAL STRIKES
0
High Volume Contracts — Vol > 500 (1 contracts)
TypeStrikeExpiryVolume
CALL$1852026-08-21550
P/C OI RATIO
0.53
TOTAL OI
176
CALL OI
115
PUT OI
61
👤 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.
85% BUY
15% SELL
SHARES BOUGHT (6m)
465,280
SHARES SOLD (6m)
81,560
NET INSIDER FLOW
+383,720
FORM 4 FILINGS (90d)
22
Recent Insider Transactions (0 buys / 5 sells / 5 grants)
TypeInsiderSharesDate
SELLSAYINER NECIP9,8242026-05-08
SELLLAUB STEVEN A1,5002026-05-07
GRANTGAGNEJA SUMEET41,3202026-05-01
SELLRAO MEERA P.2,9722026-04-24
SELLRAO MEERA P.8,5382026-04-14
SELLSERAPHIN LUC5,4262026-04-02
GRANTFAN XIANZHI SEAN22,2342026-04-01
GRANTRAO MEERA P.2,2232026-04-01
GRANTSTANG ERIC BRADFORD2,2232026-04-01
GRANTPENG VICTOR2,2232026-04-01
🏦 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
99.1%
ACCUMULATION vs DISTRIBUTION
70% ACCUMULATING
30% DISTRIBUTING
NET SHARES FLOW
+10,487,876
FLOW SCORE
+0.43
ADDING
7
SELLING
1
Institutional Position Changes (QoQ)
ActionInstitution% HeldQoQ ΔShares Δ
★ NEW POSITIONVanguard Portfolio Management LLC6.14%NEW+3,322,160
★ NEW POSITIONVanguard Capital Management LLC4.46%NEW+2,413,927
★ NEW POSITIONFMR, LLC3.07%NEW+1,731,433
★ NEW POSITIONT. Rowe Price Investment Management, Inc.2.21%NEW+1,703,174
▲▲ HEAVY BUYInvesco Ltd.6.01%+56.6%+2,350,278
▲▲ HEAVY BUYEdgepoint Investment Group Inc.1.80%+38.5%+541,023
▲ ADDINGGeode Capital Management, LLC2.89%+9.9%+281,719
▬ HOLDState Street Corporation4.04%+2.9%+122,020
▬ HOLDBlackrock Inc.15.08%+0.2%+30,921
▼▼ HEAVY SELLPrice (T.Rowe) Associates Inc3.12%-37.3%-2,008,779
ETF & Mutual Fund Flow (0 adding / 0 selling)
ActionFundQoQ ΔShares Δ
▬ HOLDiShares Trust-iShares Core S&P Mid-Cap ETF+2.7%+92,842
▬ HOLDVANGUARD INDEX FUNDS-Vanguard Total Stock Mar+0.2%+6,428
▬ HOLDiShares Trust-iShares Russell 2000 ETF-0.2%-5,776
▬ HOLDVANGUARD INDEX FUNDS-Vanguard Small-Cap Index-4.2%-107,364
▬ HOLDiShares Trust-iShares Semiconductor ETF-4.0%-80,605
▬ HOLDVANGUARD WORLD FUND-Vanguard Information Tech+2.5%+40,118
▬ HOLDVANGUARD INDEX FUNDS-Vanguard Small-Cap Growt-3.4%-48,803
▬ HOLDT. ROWE PRICE QUANTITATIVE Mgmt Fd.S, INC.-T.-3.2%-40,560
▬ HOLDVANGUARD INDEX FUNDS-Vanguard Extended Market+0.7%+8,293
▬ HOLDFidelity Salem Street Trust-Fidelity Small Ca+1.1%+11,393
🕶 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
8.6%
DAYS TO COVER
2.5
SI CHANGE (MoM)
↑ 14.8%
SQUEEZE RISK
LOW
SHARES SHORT
6,878,263
PRIOR MONTH
5,990,703
FLOAT SHARES
107,254,569
AVG VOLUME
2,269,045
📡 Data Sources 数据来源
Options Flow
BULLISH (50%)
Insider Trading
BULLISH (90%)
Smart Money Flow
LEAN BULLISH (75%)
Short Interest
LEAN BEARISH (60%)
📋 Summary 综合摘要