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 |
NVIDIA
NVDA
|
$29.3M |
| 2 |
Industrial Select Sector SPDR Fund
XLI
|
$23.1M |
| 3 |
iShares Russell 2000 ETF
IWM
|
$18M |
| 4 |
Netflix
NFLX
|
$17.4M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$14M |
Top Sells
| 1 |
Invesco QQQ Trust
QQQ
|
$120M |
| 2 |
SPDR S&P 500 ETF Trust
SPY
|
$41.3M |
| 3 |
Walt Disney
DIS
|
$26.9M |
| 4 |
Alphabet (Google) Class A
GOOGL
|
$13.8M |
| 5 |
Johnson & Johnson
JNJ
|
$11.3M |
Sector Composition
| 1 | Technology | 16.22% |
| 2 | Communication Services | 16.19% |
| 3 | Healthcare | 11.36% |
| 4 | Industrials | 9.74% |
| 5 | Consumer Discretionary | 8.61% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
51
ConocoPhillips
COP
$118B
| $3.72M | 0.01% |
61,007
-32,697
| -35% | -$1.99M |
|
52
Lumen
LUMN
$4.84B
| $3.66M | 0.01% |
311,190
-177,447
| -36% | -$2.09M |
|
53
Direxion Daily Gold Miners Index Bull 2X Shares
NUGT
$820M
| $3.62M | 0.01% |
132,079
+105,690
| +401% | +$2.9M |
|
54
Workday
WDAY
$62.3B
| $3.6M | 0.01% |
17,498
+6,009
| +52% | +$1.24M |
|
55
United Airlines
UAL
$34.4B
| $3.58M | 0.01% |
40,849
-2,659
| -6% | -$233K |
|
56
Nutanix
NTNX
$18.2B
| $3.56M | 0.01% |
137,105
+26,629
| +24% | +$691K |
|
57
Qorvo
QRVO
$8.42B
| $3.51M | 0.01% |
52,762
+50,531
| +2,265% | +$3.37M |
|
58
IBM
IBM
$227B
| $3.42M | 0.01% |
+24,835
| New | +$3.42M |
|
59
Fair Isaac
FICO
$36.5B
| $3.29M | 0.01% |
10,490
+6,250
| +147% | +$1.96M |
|
60
Stanley Black & Decker
SWK
$11.3B
| $3.19M | 0.01% |
22,074
-841
| -4% | -$122K |
|
61
Okta
OKTA
$15.8B
| $3.17M | 0.01% |
25,677
+23,931
| +1,371% | +$2.96M |
|
62
BP
BP
$88.8B
| $3.15M | 0.01% |
75,521
+62,192
| +467% | +$2.59M |
|
63
Dollar General
DG
$24.1B
| $3.01M | 0.01% |
22,275
+16,403
| +279% | +$2.22M |
|
|
RSX
64
DELISTED
VanEck Russia ETF
RSX
| $2.99M | 0.01% |
+126,595
| New | +$2.99M |
|
65
Zoom
ZM
$25B
| $2.98M | 0.01% |
+33,522
| New | +$2.98M |
|
66
Energy Transfer Partners
ET
$60.3B
| $2.89M | 0.01% |
205,102
+77,829
| +61% | +$1.1M |
|
67
McKesson
MCK
$85.9B
| $2.85M | 0.01% |
21,196
-1,804
| -8% | -$242K |
|
68
Sarepta Therapeutics
SRPT
$1.98B
| $2.75M | 0.01% |
18,090
+8,913
| +97% | +$1.35M |
|
69
Pinduoduo
PDD
$177B
| $2.72M | 0.01% |
131,916
+3,893
| +3% | +$80.3K |
|
70
Petrobras
PBR
$79.3B
| $2.72M | 0.01% |
+174,628
| New | +$2.72M |
|
|
VMW
71
DELISTED
VMware, Inc
VMW
| $2.71M | 0.01% |
16,213
-24,319
| -60% | -$4.06M |
|
72
CoStar Group
CSGP
$37.2B
| $2.71M | 0.01% |
+4,884
| New | +$2.71M |
|
|
AGN
73
DELISTED
Allergan plc
AGN
| $2.7M | 0.01% |
+16,147
| New | +$2.7M |
|
74
iShares iBoxx $ Investment Grade Corporate Bond ETF
LQD
$29.4B
| $2.63M | 0.01% |
+21,117
| New | +$2.63M |
|
75
Linde
LIN
$221B
| $2.6M | 0.01% |
+12,943
| New | +$2.6M |
|