NEM Insider Trading

Insider Ownership Percentage: 0.06%
Insider Buying (Last 12 Months): $0.00
Insider Selling (Last 12 Months): $4,430,635.00

Newmont Insider Trading History Chart

This chart shows the insider buying and selling history at Newmont by year and by quarter.

Skip ChartChart Data in Insider Trading History Table

Newmont Share Price & Price History

Current Price: $43.16
Price Change: Price Increase of +0.8 (1.89%)
As of 11/19/2024 01:00 AM ET

This chart shows the closing price history over time for NEM up to the past year.

Skip Chart and Table DataPrice Data in Insider Trading History Table
Days: 30 | 90 | 365

Newmont Insider Trading History

Transaction DateInsider NameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails
10/1/2024Peter TothEVPSell3,000$53.81$161,430.0091,596View SEC Filing Icon  
10/1/2024Thomas Ronald PalmerCEOSell20,000$53.81$1,076,200.00271,469View SEC Filing Icon  
9/3/2024Peter TothEVPSell3,000$52.47$157,410.0094,596View SEC Filing Icon  
9/3/2024Thomas Ronald PalmerCEOSell20,000$52.47$1,049,400.00291,469View SEC Filing Icon  
8/1/2024Thomas Ronald PalmerCEOSell20,000$49.51$990,200.00311,469View SEC Filing Icon  
7/1/2024Thomas Ronald PalmerCEOSell13,000$42.13$547,690.00331,469View SEC Filing Icon  
1/2/2024Robert D. AtkinsonCOOSell5,500$41.26$226,930.0054,251View SEC Filing Icon  
12/1/2023Robert D. AtkinsonCOOSell5,500$40.25$221,375.0059,751View SEC Filing Icon  
11/1/2023Mark David EbelInsiderSell183$37.60$6,880.8021,771View SEC Filing Icon  
11/1/2023Robert D. AtkinsonCOOSell5,500$37.60$206,800.0065,251View SEC Filing Icon  
11/1/2023Thomas Ronald PalmerCEOSell11,000$37.60$413,600.00234,039View SEC Filing Icon  
10/2/2023Mark David EbelInsiderSell183$36.47$6,674.0121,954View SEC Filing Icon  
10/2/2023Robert D. AtkinsonCOOSell5,500$36.47$200,585.0070,751View SEC Filing Icon  
10/2/2023Thomas Ronald PalmerCEOSell11,000$36.47$401,170.00245,039View SEC Filing Icon  
9/1/2023Mark David EbelInsiderSell183$39.91$7,303.5322,137View SEC Filing Icon  
9/1/2023Robert D. AtkinsonCOOSell5,500$39.91$219,505.0076,251View SEC Filing Icon  
9/1/2023Thomas Ronald PalmerCEOSell11,000$39.91$439,010.00256,039View SEC Filing Icon  
8/1/2023Thomas Ronald PalmerCEOSell11,000$42.16$463,760.00267,039View SEC Filing Icon  
7/3/2023Thomas Ronald PalmerCEOSell11,000$42.85$471,350.00278,039View SEC Filing Icon  
6/1/2023Thomas Ronald PalmerCEOSell11,000$40.84$449,240.00289,039View SEC Filing Icon  
5/1/2023Robert D. AtkinsonCOOSell3,000$47.76$143,280.0081,751View SEC Filing Icon  
5/1/2023Thomas Ronald PalmerCEOSell11,000$47.76$525,360.00300,039View SEC Filing Icon  
4/3/2023Robert D. AtkinsonCOOSell3,000$48.92$146,760.0084,751View SEC Filing Icon  
4/3/2023Thomas Ronald PalmerCEOSell11,000$48.92$538,120.00311,039View SEC Filing Icon  
3/1/2023Robert D. AtkinsonCOOSell3,000$44.25$132,750.0087,751View SEC Filing Icon  
3/1/2023Thomas Ronald PalmerCEOSell11,000$44.25$486,750.00322,039View SEC Filing Icon  
1/3/2023Robert D. AtkinsonCOOSell3,000$48.23$144,690.0033,947View SEC Filing Icon  
1/3/2023Thomas Ronald PalmerCEOSell11,000$48.23$530,530.00199,949View SEC Filing Icon  
12/1/2022Robert D. AtkinsonCOOSell3,000$48.42$145,260.0036,947View SEC Filing Icon  
12/1/2022Thomas Ronald PalmerCEOSell11,000$48.42$532,620.00210,949View SEC Filing Icon  
11/2/2022Mark CasperInsiderSell4,890$41.98$205,282.2018,217View SEC Filing Icon  
11/1/2022Robert D. AtkinsonCOOSell3,000$43.02$129,060.0039,947View SEC Filing Icon  
11/1/2022Thomas Ronald PalmerCEOSell11,000$43.02$473,220.00221,949View SEC Filing Icon  
10/3/2022Robert D. AtkinsonCOOSell3,000$42.71$128,130.0042,947View SEC Filing Icon  
10/3/2022Thomas Ronald PalmerCEOSell11,000$42.71$469,810.00232,949View SEC Filing Icon  
8/1/2022Robert D. AtkinsonCOOSell3,000$45.35$136,050.0048,947View SEC Filing Icon  
8/1/2022Thomas Ronald PalmerCEOSell11,000$45.35$498,850.00254,949View SEC Filing Icon  
7/1/2022Robert D. AtkinsonCOOSell3,000$59.43$178,290.0064,617View SEC Filing Icon  
7/1/2022Thomas Ronald PalmerCEOSell11,000$59.43$653,730.00265,949View SEC Filing Icon  
6/30/2022Nancy K. BueseCFOSell10,000$61.50$615,000.0039,530View SEC Filing Icon  
6/1/2022Robert D. AtkinsonCOOSell3,000$67.64$202,920.0067,617View SEC Filing Icon  
6/1/2022Thomas Ronald PalmerCEOSell11,000$67.64$744,040.00276,949View SEC Filing Icon  
5/12/2022Stephen P. GottesfeldEVPSell4,000$66.63$266,520.0087,753View SEC Filing Icon  
5/2/2022Robert D. AtkinsonCOOSell3,000$71.20$213,600.0070,617View SEC Filing Icon  
5/2/2022Thomas Ronald PalmerCEOSell11,000$71.20$783,200.00287,949View SEC Filing Icon  
3/30/2022Nancy K. BueseCFOSell10,000$79.00$790,000.00View SEC Filing Icon  
3/30/2022Nancy LipsonEVPSell19,866$79.00$1,569,414.00View SEC Filing Icon  
3/23/2022Dean GehringEVPSell4,477$76.98$344,639.46View SEC Filing Icon  
3/9/2022Stephen P. GottesfeldEVPSell4,000$73.76$295,040.00View SEC Filing Icon  
3/7/2022Blake M. RhodesSVPSell3,000$77.91$233,730.00View SEC Filing Icon  
3/1/2022Blake M. RhodesSVPSell500$66.94$33,470.00View SEC Filing Icon  
3/1/2022Robert D. AtkinsonCOOSell3,000$66.94$200,820.00View SEC Filing Icon  
3/1/2022Thomas Ronald PalmerCEOSell7,000$66.94$468,580.00View SEC Filing Icon  
2/9/2022Stephen P. GottesfeldEVPSell4,000$62.96$251,840.00View SEC Filing Icon  
2/1/2022Blake M. RhodesSVPSell500$62.00$31,000.00View SEC Filing Icon  
2/1/2022Robert D. AtkinsonCOOSell3,000$62.00$186,000.00View SEC Filing Icon  
2/1/2022Thomas Ronald PalmerCEOSell7,000$62.00$434,000.00View SEC Filing Icon  
1/12/2022Stephen P. GottesfeldEVPSell4,000$61.02$244,080.00View SEC Filing Icon  
12/8/2021Stephen P. GottesfeldEVPSell4,000$55.61$222,440.00View SEC Filing Icon  
12/1/2021Blake M. RhodesSVPSell500$55.23$27,615.00View SEC Filing Icon  
12/1/2021Thomas Ronald PalmerCEOSell7,000$55.23$386,610.00View SEC Filing Icon  
See Full Table

SEC Filings (Institutional Ownership Changes) for Newmont (NYSE:NEM)

68.85% of Newmont stock is owned by institutions. Institutional ownership can be a sign of analyst confidence in the fundamentals of the stock.

Institutional Buying and Selling by Quarter

This chart shows the instiutional buying and selling at NEM by year and by quarter.

Skip Institutional Buying and Selling Chart and Table DataRead Chart Data in Institutional Trading History Table

Newmont Institutional Trading History

Reporting DateHedge FundShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
11/19/2024McIlrath & Eck LLC809$43K0.0%+80.6%0.000%Search for SEC Filing on Google Icon
11/19/2024TCW Group Inc.15,754$0.84M0.0%-2.4%0.001%Search for SEC Filing on Google Icon
11/19/2024Hohimer Wealth Management LLC105,361$5.63M1.2%-0.3%0.009%Search for SEC Filing on Google Icon
11/18/2024TD Private Client Wealth LLC3,471$0.19M0.0%+27.2%0.000%Search for SEC Filing on Google Icon
11/18/2024Virtue Capital Management LLC15,472$0.83M0.2%N/A0.001%Search for SEC Filing on Google Icon
11/18/2024Fortem Financial Group LLC26,076$1.39M0.6%N/A0.002%Search for SEC Filing on Google Icon
11/18/2024Teachers Retirement System of The State of Kentucky86,061$4.60M0.0%-6.1%0.008%Search for SEC Filing on Google Icon
11/18/2024Sunbelt Securities Inc.5,622$0.30M0.0%+33.9%0.000%Search for SEC Filing on Google Icon
11/18/2024Toronto Dominion Bank748,420$40M0.1%+1.9%0.066%Search for SEC Filing on Google Icon
11/18/2024Chiron Investment Management LLC240,683$12.87M4.5%+3.4%0.021%Search for SEC Filing on Google Icon
11/18/2024TT International Asset Management LTD60,000$3.21M0.4%-27.7%0.005%Search for SEC Filing on Google Icon
11/18/2024Neo Ivy Capital Management4,072$0.22M0.1%N/A0.000%Search for SEC Filing on Google Icon
11/18/2024Coldstream Capital Management Inc.14,899$0.76M0.0%+26.6%0.001%Search for SEC Filing on Google Icon
11/16/2024Geode Capital Management LLC23,484,382$1.25B0.1%+1.4%2.063%Search for SEC Filing on Google Icon
11/15/2024Vestcor Inc23,136$1.24M0.0%+11.3%0.002%Search for SEC Filing on Google Icon
11/15/2024M&T Bank Corp69,170$3.70M0.0%-0.4%0.006%Search for SEC Filing on Google Icon
11/15/2024Abel Hall LLC5,633$0.30M0.2%-26.1%0.000%Search for SEC Filing on Google Icon
11/15/2024Continuum Advisory LLC1,369$73K0.0%-21.7%0.000%Search for SEC Filing on Google Icon
11/15/2024LRI Investments LLC4,331$0.23M0.0%+191.5%0.000%Search for SEC Filing on Google Icon
11/15/2024Gordian Capital Singapore Pte Ltd30,500$1.63M0.6%+69.4%0.003%Search for SEC Filing on Google Icon
11/15/2024Public Employees Retirement System of Ohio514,781$27.52M0.1%-0.8%0.045%Search for SEC Filing on Google Icon
11/15/2024Groupama Asset Managment96,873$5.18M0.1%+45.2%0.009%Search for SEC Filing on Google Icon
11/15/2024Nomura Asset Management Co. Ltd.344,328$18.40M0.1%+6.0%0.030%Search for SEC Filing on Google Icon
11/15/2024Y Intercept Hong Kong Ltd61,173$3.27M0.2%N/A0.005%Search for SEC Filing on Google Icon
11/15/2024MML Investors Services LLC104,301$5.58M0.0%+5.8%0.009%Search for SEC Filing on Google Icon
11/15/2024Orion Portfolio Solutions LLC14,851$0.79M0.0%+58.6%0.001%Search for SEC Filing on Google Icon
11/15/2024XTX Topco Ltd48,316$2.58M0.2%-17.8%0.004%Search for SEC Filing on Google Icon
11/15/2024Zurich Insurance Group Ltd FI1,833,694$98.01M0.8%N/A0.161%Search for SEC Filing on Google Icon
11/15/2024iSAM Funds UK Ltd16,208$0.87M0.5%+15.5%0.001%Search for SEC Filing on Google Icon
11/15/2024National Bank of Canada FI3,021,346$161.49M0.2%-10.4%0.265%Search for SEC Filing on Google Icon
11/15/2024EP Wealth Advisors LLC45,225$2.42M0.0%+31.4%0.004%Search for SEC Filing on Google Icon
11/15/2024United Services Automobile Association26,291$1.41M0.0%-12.8%0.002%Search for SEC Filing on Google Icon
11/15/2024Insigneo Advisory Services LLC3,812$0.20M0.0%N/A0.000%Search for SEC Filing on Google Icon
11/15/2024Kovitz Investment Group Partners LLC90,782$4.85M0.0%+6.8%0.008%Search for SEC Filing on Google Icon
11/15/2024Wellington Management Group LLP178,233$9.53M0.0%-15.3%0.016%Search for SEC Filing on Google Icon
11/15/2024Wahed Invest LLC28,034$1.50M0.3%+8.4%0.002%Search for SEC Filing on Google Icon
11/15/2024Weiss Asset Management LP80,456$4.30M0.1%N/A0.007%Search for SEC Filing on Google Icon
11/15/2024Two Sigma Advisers LP601,276$32.14M0.1%+99.8%0.053%Search for SEC Filing on Google Icon
11/15/2024Stansberry Asset Management LLC6,428$0.34M0.0%+16.9%0.001%Search for SEC Filing on Google Icon
11/15/2024State Street Corp48,821,075$2.61B0.1%-3.5%4.288%Search for SEC Filing on Google Icon
11/15/2024Stevens Capital Management LP6,710$0.36M0.1%N/A0.001%Search for SEC Filing on Google Icon
11/15/2024Stifel Financial Corp546,751$29.22M0.0%-3.4%0.048%Search for SEC Filing on Google Icon
11/15/2024Quadrature Capital Ltd119,251$6.37M0.1%-23.5%0.010%Search for SEC Filing on Google Icon
11/15/2024Quantinno Capital Management LP126,725$6.77M0.1%+9.4%0.011%Search for SEC Filing on Google Icon
11/15/2024Quarry LP3,006$0.16M0.0%N/A0.000%Search for SEC Filing on Google Icon
11/15/2024Royal London Asset Management Ltd.475,146$25.40M0.1%+2.7%0.042%Search for SEC Filing on Google Icon
11/15/2024Recurrent Investment Advisors LLC28,248$1.51M0.1%-6.5%0.002%Search for SEC Filing on Google Icon
11/15/2024Polar Asset Management Partners Inc.16,750$0.90M0.0%-9.2%0.001%Search for SEC Filing on Google Icon
11/15/2024IHT Wealth Management LLC17,420$0.94M0.0%-10.6%0.002%Search for SEC Filing on Google Icon
11/15/2024Integrated Wealth Concepts LLC17,501$0.94M0.0%-11.9%0.002%Search for SEC Filing on Google Icon
11/15/2024Invenomic Capital Management LP471,699$25.21M1.4%-16.9%0.041%Search for SEC Filing on Google Icon
11/15/2024Investment Management Corp of Ontario38,328$2.05M0.0%+49.0%0.003%Search for SEC Filing on Google Icon
11/15/2024Itau Unibanco Holding S.A.24,486$1.31M0.0%+13.4%0.002%Search for SEC Filing on Google Icon
11/15/2024Janus Henderson Group PLC537,444$28.73M0.0%-5.7%0.047%Search for SEC Filing on Google Icon
11/15/2024HighTower Advisors LLC677,082$36.16M0.1%-3.3%0.059%Search for SEC Filing on Google Icon
11/15/2024Hilltop Holdings Inc.7,617$0.41M0.0%N/A0.001%Search for SEC Filing on Google Icon
11/15/2024Cheviot Value Management LLC330,428$17.66M3.3%-1.4%0.029%Search for SEC Filing on Google Icon
11/15/2024Chevy Chase Trust Holdings LLC782,457$41.82M0.1%+5.5%0.069%Search for SEC Filing on Google Icon
11/15/2024Cinctive Capital Management LP44,254$2.37M0.1%-64.4%0.004%Search for SEC Filing on Google Icon
11/15/2024Point72 Asia Singapore Pte. Ltd.21,559$1.15M0.2%+890.3%0.002%Search for SEC Filing on Google Icon
11/15/2024Point72 Hong Kong Ltd18,200$0.97M0.1%N/A0.002%Search for SEC Filing on Google Icon
11/15/2024B&L Asset Management LLC6,085$0.33M0.2%N/A0.001%Search for SEC Filing on Google Icon
11/15/2024Erste Asset Management GmbH218,993$11.80M0.1%N/A0.019%Search for SEC Filing on Google Icon
11/15/2024Josh Arnold Investment Consultant LLC6,822$0.37M0.3%N/A0.001%Search for SEC Filing on Google Icon
11/14/2024BRITISH COLUMBIA INVESTMENT MANAGEMENT Corp192,398$10.28M0.1%-12.6%0.017%Search for SEC Filing on Google Icon
11/14/2024Encompass More Asset Management10,192$0.55M0.2%N/A0.001%Search for SEC Filing on Google Icon
11/14/2024L.M. Kohn & Company3,826$0.20M0.1%N/A0.000%Search for SEC Filing on Google Icon
11/14/2024Point72 Europe London LLP28,000$1.50M0.1%N/A0.002%Search for SEC Filing on Google Icon
11/14/2024Caisse DE Depot ET Placement DU Quebec189,952$10.15M0.0%N/A0.017%Search for SEC Filing on Google Icon
11/14/2024White Knight Strategic Wealth Advisors LLC6,441$0.34M0.3%+7.8%0.001%Search for SEC Filing on Google Icon
11/14/2024Captrust Financial Advisors77,539$4.14M0.0%-4.7%0.007%Search for SEC Filing on Google Icon
11/14/2024Atlantic Union Bankshares Corp4,594$0.25M0.0%N/A0.000%Search for SEC Filing on Google Icon
11/14/2024Rockefeller Capital Management L.P.385,658$20.61M0.1%-2.7%0.034%Search for SEC Filing on Google Icon
11/14/2024Martingale Asset Management L P524,621$28.04M0.6%+2.7%0.046%Search for SEC Filing on Google Icon
11/14/2024Northwest & Ethical Investments L.P.175,203$9.37M0.2%-6.7%0.015%Search for SEC Filing on Google Icon
11/14/2024Vinva Investment Management Ltd68,923$3.72M0.2%+190.5%0.006%Search for SEC Filing on Google Icon
11/14/2024Financial Counselors Inc.78,260$4.18M0.1%-0.5%0.007%Search for SEC Filing on Google Icon
11/14/2024Public Sector Pension Investment Board49,238$2.63M0.0%+11.1%0.004%Search for SEC Filing on Google Icon
11/14/2024UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC8,076,717$431.70M0.1%-9.5%0.709%Search for SEC Filing on Google Icon
11/14/2024Zurcher Kantonalbank Zurich Cantonalbank 602,212$32.19M0.1%-5.8%0.053%Search for SEC Filing on Google Icon
11/14/2024BBR Partners LLC4,890$0.26M0.0%-9.3%0.000%Search for SEC Filing on Google Icon
11/14/2024National Wealth Management Group LLC8,062$0.43M0.3%N/A0.001%Search for SEC Filing on Google Icon
11/14/2024MetLife Investment Management LLC298,482$15.95M0.1%-3.0%0.026%Search for SEC Filing on Google Icon
11/14/2024BNP Paribas64,406$3.44M0.1%-4.5%0.006%Search for SEC Filing on Google Icon
11/14/2024Healthcare of Ontario Pension Plan Trust Fund290,000$15.50M0.0%-54.0%0.025%Search for SEC Filing on Google Icon
11/13/2024Glenmede Trust Co. NA29,642$1.58M0.0%+8.0%0.003%Search for SEC Filing on Google Icon
11/13/2024Bridgewater Associates LP711,591$38.04M0.2%+1,947.6%0.063%Search for SEC Filing on Google Icon
11/13/2024Townsquare Capital LLC23,299$1.25M0.0%+117.7%0.002%Search for SEC Filing on Google Icon
11/13/2024Rock Point Advisors LLC3,898$0.21M0.1%N/A0.000%Search for SEC Filing on Google Icon
11/13/2024Avestar Capital LLC5,405$0.29M0.0%+9.4%0.000%Search for SEC Filing on Google Icon
11/13/2024Brooklyn Investment Group6,391$0.34M0.1%N/A0.001%Search for SEC Filing on Google Icon
11/13/2024Quantbot Technologies LP65,119$3.48M0.1%N/A0.006%Search for SEC Filing on Google Icon
11/13/2024D.A. Davidson & CO.94,764$5.07M0.0%-7.6%0.008%Search for SEC Filing on Google Icon
11/13/2024FMR LLC7,052,439$376.95M0.0%+21.1%0.619%Search for SEC Filing on Google Icon
11/13/2024Dai ichi Life Insurance Company Ltd97,359$5.20M0.1%-1.8%0.009%Search for SEC Filing on Google Icon
11/13/2024The Manufacturers Life Insurance Company 841,779$44.99M0.0%-2.3%0.074%Search for SEC Filing on Google Icon
11/13/2024Horizon Kinetics Asset Management LLC24,089$1.29M0.0%+24.4%0.002%Search for SEC Filing on Google Icon
11/13/2024Longfellow Investment Management Co. LLC235,157$12.57M3.1%-3.5%0.021%Search for SEC Filing on Google Icon
11/13/2024Mirabella Financial Services LLP19,031$1.02M0.1%+40.6%0.002%Search for SEC Filing on Google Icon
11/13/2024Brown Brothers Harriman & Co.4,526$0.24M0.0%+31.6%0.000%Search for SEC Filing on Google Icon
Data available starting January 2016

See Full Table
Newmont logo
Newmont Corporation engages in the production and exploration of gold. It also explores for copper, silver, zinc, and lead. The company has operations and/or assets in the United States, Canada, Mexico, Dominican Republic, Peru, Suriname, Argentina, Chile, Australia, Papua New Guinea, Ecuador, Fiji, and Ghana. The company was founded in 1916 and is headquartered in Denver, Colorado.
Read More on Newmont

Today's Range

Now: $43.16
Low: $42.46
High: $43.19

50 Day Range

MA: $50.78
Low: $40.67
High: $58.68

52 Week Range

Now: $43.16
Low: $29.42
High: $58.72

Volume

10,929,248 shs

Average Volume

10,548,765 shs

Market Capitalization

$49.14 billion

P/E Ratio

N/A

Dividend Yield

2.44%

Beta

0.51

Who are the company insiders with the largest holdings of Newmont?

Newmont's top insider shareholders include:
  1. Thomas Ronald Palmer (CEO)
  2. Peter Toth (EVP)
  3. Robert D Atkinson (COO)
  4. Mark David Ebel (Insider)
Learn More about top insider investors at Newmont.

Who are the major institutional investors of Newmont?

Newmont's top institutional shareholders include:
  1. Van ECK Associates Corp — 4.30%
  2. State Street Corp — 4.29%
  3. Geode Capital Management LLC — 2.06%
  4. UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC — 0.71%
  5. FMR LLC — 0.62%
  6. Charles Schwab Investment Management Inc. — 0.59%
Learn More about top institutional investors of Newmont stock.

Which institutional investors are selling Newmont stock?

Within the last quarter, NEM stock was sold by these institutional investors:
  1. Van ECK Associates Corp
  2. State Street Corp
  3. UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC
  4. National Bank of Canada FI
  5. Healthcare of Ontario Pension Plan Trust Fund
  6. Walleye Capital LLC
  7. Los Angeles Capital Management LLC
  8. Tobam
Within the previous year, company insiders that have sold Newmont company stock include:
  1. Thomas Ronald Palmer (CEO)
  2. Peter Toth (EVP)
  3. Robert D Atkinson (COO)
Learn More investors selling Newmont stock.

Which institutional investors are buying Newmont stock?

During the last quarter, NEM stock was acquired by institutional investors including:
  1. Zurich Insurance Group Ltd FI
  2. FMR LLC
  3. Assenagon Asset Management S.A.
  4. International Assets Investment Management LLC
  5. Integrated Investment Consultants LLC
  6. Bridgewater Associates LP
  7. National Pension Service
  8. Parallax Volatility Advisers L.P.