Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| 1 |
Apple
AAPL
|
$35.2M |
| 2 |
Micron Technology
MU
|
$32.9M |
| 3 |
Berkshire Hathaway Class B
BRK.B
|
$29.5M |
| 4 |
NVIDIA
NVDA
|
$22.9M |
| 5 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
$22M |
Top Sells
| 1 |
TWX
Time Warner Inc
TWX
|
$34.8M |
| 2 |
Amazon
AMZN
|
$33.4M |
| 3 |
Tesla
TSLA
|
$19.8M |
| 4 |
Netflix
NFLX
|
$17.7M |
| 5 |
TWTR
Twitter, Inc.
TWTR
|
$13.5M |
Sector Composition
| 1 | Technology | 20.43% |
| 2 | Consumer Discretionary | 15.24% |
| 3 | Communication Services | 12% |
| 4 | Financials | 10.18% |
| 5 | Industrials | 9.87% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
401
Occidental Petroleum
OXY
$45.2B
| $633K | ﹤0.01% |
7,566
-25,470
| -77% | -$2.13M |
|
|
PTLA
402
DELISTED
Portola Pharmaceuticals, Inc.
PTLA
| $617K | ﹤0.01% |
+16,362
| New | +$617K |
|
403
AMC Entertainment Holdings
AMC
$1.41B
| $611K | ﹤0.01% |
+3,844
| New | +$611K |
|
404
Bath & Body Works
BBWI
$6.06B
| $607K | ﹤0.01% |
+20,386
| New | +$607K |
|
|
KLXI
405
DELISTED
KLX Inc.
KLXI
| $607K | ﹤0.01% |
+10,017
| New | +$607K |
|
|
MMP
406
DELISTED
Magellan Midstream Partners, L.P.
MMP
| $603K | ﹤0.01% |
8,740
+8,426
| +2,683% | +$581K |
|
|
DERM
407
DELISTED
Dermira, Inc.
DERM
| $603K | ﹤0.01% |
65,622
+59,017
| +894% | +$542K |
|
|
CLR
408
DELISTED
CONTINENTAL RESOURCES INC.
CLR
| $600K | ﹤0.01% |
9,267
-443
| -5% | -$28.7K |
|
409
W.W. Grainger
GWW
$47.5B
| $598K | ﹤0.01% |
+1,942
| New | +$598K |
|
410
Republic Services
RSG
$71.7B
| $595K | ﹤0.01% |
+8,710
| New | +$595K |
|
|
NBL
411
DELISTED
Noble Energy, Inc.
NBL
| $594K | ﹤0.01% |
16,865
+16,539
| +5,073% | +$583K |
|
412
Alerian MLP ETF
AMLP
$10.5B
| $590K | ﹤0.01% |
11,702
+5,753
| +97% | +$290K |
|
|
PFPT
413
DELISTED
Proofpoint, Inc.
PFPT
| $590K | ﹤0.01% |
+5,117
| New | +$590K |
|
414
WisdomTree Japan Hedged Equity Fund
DXJ
$3.78B
| $588K | ﹤0.01% |
10,894
-83,470
| -88% | -$4.51M |
|
415
IQVIA
IQV
$31.9B
| $588K | ﹤0.01% |
+5,896
| New | +$588K |
|
416
Herbalife
HLF
$1.02B
| $586K | ﹤0.01% |
10,915
-5,827
| -35% | -$313K |
|
|
ATH
417
DELISTED
Athene Holding Ltd. Class A Common Shares
ATH
| $586K | ﹤0.01% |
13,383
+3,624
| +37% | +$159K |
|
418
HP
HPQ
$27.4B
| $585K | ﹤0.01% |
+25,788
| New | +$585K |
|
|
RDUS
419
DELISTED
Radius Health, Inc.
RDUS
| $584K | ﹤0.01% |
19,829
+8,854
| +81% | +$261K |
|
420
iShares MSCI Pacific ex Japan ETF
EPP
$1.84B
| $577K | ﹤0.01% |
12,561
-108
| -0.9% | -$4.96K |
|
421
Helmerich & Payne
HP
$2.01B
| $573K | ﹤0.01% |
8,999
+5,784
| +180% | +$368K |
|
422
ConocoPhillips
COP
$116B
| $572K | ﹤0.01% |
8,225
+5,853
| +247% | +$407K |
|
|
SAGE
423
DELISTED
Sage Therapeutics
SAGE
| $572K | ﹤0.01% |
3,655
+3,332
| +1,032% | +$521K |
|
|
SUM
424
DELISTED
Summit Materials, Inc. Class A Common Stock
SUM
| $570K | ﹤0.01% |
22,093
+21,367
| +2,943% | +$551K |
|
425
Encore Capital Group
ECPG
$1.02B
| $569K | ﹤0.01% |
+15,548
| New | +$569K |
|