Whale Moves | IWM and HYG Lead with Massive Put Open Interest Increases, VIX Calls Surge

Generated by AI AgentAinvest Market Brief
Wednesday, Sep 17, 2025 8:01 pm ET3min read
Aime RobotAime Summary

- SPDR S&P 500 ETF (SPY) led options trading with 8.09M volume and 20.35M open interest, including a $640 put surge.

- IWM saw 3.92M option volume, with $229 put and $242 call open interest rising over 50K each ahead of 2025 expirations.

- VIX options surged, with $16 and $25 calls gaining 61K+ open interest, signaling heightened market volatility expectations.

- HYG and EEM showed notable bond/equity ETF activity, including $74 put and $54 call open interest increases exceeding 30K.

Top 20 Stocks with Most Traded Options

The most traded option today is

ETF (SPY), with the stock slightly down by 0.12%. It saw a robust option volume of 8.09 million and open interest at 20.35 million. Notably, a $640 put expiring September 18, 2025, saw an increase in open interest by 47.31K.

Invesco QQQ Trust (QQQ) took the second spot, with the stock decreasing by 0.20%. It recorded an option volume of 4.43 million and open interest of 10.62 million.

iShares Russell 2000 ETF (IWM) saw a rise of 0.26%, with 3.92 million in option volume and 13.32 million in open interest. Significant open interest increases include a $229 put expiring September 19, 2025, growing by 106.62K, a $242 call expiring September 18, 2025, increasing by 57.36K, a $233 put expiring September 19, 2025, up by 55.40K, and a $226 put expiring October 17, 2025, climbing by 51.11K.

NVIDIA (NVDA) experienced a substantial drop of 2.62%, with an option volume of 2.93 million and open interest reaching 20.27 million.

Tesla (TSLA) rose by 1.01%, having an option volume of 2.54 million and open interest totaling 8.59 million.

Opendoor Technologies (OPEN) saw a significant surge of 14.46%, with 2.07 million in option volume and open interest at 3.47 million. A notable open interest increase was seen in the $10 call expiring September 19, 2025, by 37.90K.

Palantir (PLTR) decreased by 1.13%, with option volume at 802.07K and an open interest of 3.85 million.

iShares 20+ Year Treasury Bond ETF (TLT) fell by 0.25%, with an option volume of 720.82K and open interest totaling 6.25 million. A $89.50 put expiring September 19, 2025, saw an increase in open interest by 29.91K.

Rigetti Computing (RGTI) increased by 9.95%, with an option volume of 697.59K and open interest of 995.38K.

Apple (AAPL) saw a modest rise of 0.35%, with 668.88K in option volume and open interest at 5.75 million.

Amazon (AMZN) decreased by 1.04%, with option volume reaching 581.59K and open interest at 4.13 million.

iShares

Trust (IBIT) dropped by 1.05%, having an option volume of 575.23K and open interest at 6.06 million.

SPDR Gold ETF (GLD) fell by 0.77%, with an option volume of 553.17K and open interest at 4.85 million. There's been a notable open interest increase in a $345 call expiring September 30, 2025, by 56.02K.

iShares

(SLV) decreased by 2.10%, with option volume at 547.84K and open interest at 6.43 million.

Advanced Micro Devices (AMD) saw a fall of 0.81%, having an option volume of 517.83K and open interest of 4.06 million.

iShares

Emerging Markets ETF (EEM) experienced a rise of 0.43%, with 498.95K in option volume and open interest at 7.81 million. Notable open interest increases include a $54 call expiring October 17, 2025, up by 45.90K, a $53 call expiring September 19, 2025, increasing by 37.34K, and a $56 call expiring October 17, 2025, by 35.08K.

Ishares Iboxx $ High Yield Corporate Bond ETF (HYG) slightly decreased by 0.10%, with option volume at 494.98K and open interest at 10.75 million. Notably, a $74 put expiring March 20, 2026, saw an increase in open interest by 180.09K and a $76 put expiring January 16, 2026, by 30.33K.

Snap Inc (SNAP) rose by 3.23%, with 483.56K in option volume and open interest at 2.20 million.

SoFi Technologies (SOFI) decreased by 1.02%, having an option volume of 474.63K and open interest of 4.10 million.

NIO Inc (NIO) increased by 6.13%, with an option volume of 466.41K and an open interest of 4.56 million.

Other Notable Moves

VIX options saw significant open interest increases. The $16 call expiring November 19, 2025, grew by 61.42K, the $25 call expiring November 19, 2025, by 60.63K, the $100 call expiring January 21, 2026, by 50.06K, the $60 call expiring January 21, 2026, by 50.03K, the $80 call expiring November 19, 2025, by 42.09K, the $19.50 put expiring November 19, 2025, by 31.53K, the $19.50 call expiring November 19, 2025, by 30.82K, and the $15 put expiring October 22, 2025, by 29.65K.

EWZ options also saw increases, with the $40 call expiring March 20, 2026, rising by 115.23K and another $40 call expiring June 18, 2026, by 34.39K.

WOLF's $4 call expiring September 26, 2025, experienced an increase in open interest by 47.34K.

SPXW saw notable open interest increases with the $5420 put expiring October 31, 2025, rising by 36.83K and the $5320 put expiring October 31, 2025, by 36.57K.

MARA's $25 call expiring March 20, 2026, saw an open interest increase by 35.08K.

VALE's $12 call expiring October 17, 2025, increased in open interest by 32.72K.

EWC's $40 put expiring January 15, 2027, experienced an increase in open interest by 30.03K.

MPW's $3.50 put expiring January 15, 2027, saw an increase in open interest by 29.00K.

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