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 |
Invesco QQQ Trust
QQQ
|
+$85.4M |
| 2 |
SPDR Gold Trust
GLD
|
+$75.9M |
| 3 |
NVIDIA
NVDA
|
+$42.6M |
| 4 |
Netflix
NFLX
|
+$41.1M |
| 5 |
iShares MSCI EAFE ETF
EFA
|
+$40.5M |
Top Sells
| 1 |
Apple
AAPL
|
+$65.7M |
| 2 |
iPath Series B S&P 500 VIX Short-Term Futures ETN
VXX
|
+$25.5M |
| 3 |
SPDR S&P 500 ETF Trust
SPY
|
+$24.4M |
| 4 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$24.3M |
| 5 |
Broadcom
AVGO
|
+$21.3M |
Sector Composition
| 1 | Technology | 15.2% |
| 2 | Consumer Discretionary | 14.52% |
| 3 | Communication Services | 10.57% |
| 4 | Healthcare | 8.15% |
| 5 | Financials | 7.15% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
926
Sunoco
SUN
$6.9B
| $125K | ﹤0.01% |
5,482
-3,518
| -39% | -$80.2K |
|
927
Molson Coors Class B
TAP
$9.7B
| $124K | ﹤0.01% |
+3,615
| New | +$124K |
|
|
USCR
928
DELISTED
U S Concrete, Inc.
USCR
| $124K | ﹤0.01% |
5,021
+4,195
| +508% | +$104K |
|
929
Carlisle Companies
CSL
$16.2B
| $123K | ﹤0.01% |
1,034
+916
| +776% | +$109K |
|
930
Cytosorbents Corp
CTSO
$59.3M
| $122K | ﹤0.01% |
+12,327
| New | +$122K |
|
931
Kimberly-Clark
KMB
$42.5B
| $121K | ﹤0.01% |
860
-14,249
| -94% | -$2M |
|
932
SPS Commerce
SPSC
$4.18B
| $121K | ﹤0.01% |
+1,621
| New | +$121K |
|
|
CORR
933
DELISTED
CorEnergy Infrastructure Trust, Inc.
CORR
| $121K | ﹤0.01% |
13,281
+12,779
| +2,546% | +$116K |
|
|
REGI
934
DELISTED
Renewable Energy Group, Inc.
REGI
| $121K | ﹤0.01% |
4,911
-6,626
| -57% | -$163K |
|
935
Imunon
IMNN
$14.1M
| $120K | ﹤0.01% |
+166
| New | +$120K |
|
936
CarParts.com
PRTS
$47.5M
| $120K | ﹤0.01% |
+13,920
| New | +$120K |
|
|
VOXX
937
DELISTED
VOXX International Corporation Class A
VOXX
| $120K | ﹤0.01% |
+20,858
| New | +$120K |
|
938
CACI
CACI
$10.7B
| $119K | ﹤0.01% |
553
-344
| -38% | -$74K |
|
939
CorMedix
CRMD
$955M
| $119K | ﹤0.01% |
18,989
+4,408
| +30% | +$27.6K |
|
940
Gold Fields
GFI
$33.1B
| $119K | ﹤0.01% |
12,755
-38,113
| -75% | -$356K |
|
941
Tronox
TROX
$755M
| $119K | ﹤0.01% |
+16,491
| New | +$119K |
|
942
ProShares UltraPro Short 20+ Year Treasury
TTT
$21.9M
| $119K | ﹤0.01% |
4,124
+3,554
| +624% | +$103K |
|
943
Invesco Aerospace & Defense ETF
PPA
$6.27B
| $118K | ﹤0.01% |
2,143
+367
| +21% | +$20.2K |
|
|
ENBL
944
DELISTED
ENABLE MIDSTREAM PARTNERS, LP
ENBL
| $118K | ﹤0.01% |
25,408
+2,290
| +10% | +$10.6K |
|
|
VEDL
945
DELISTED
Vedanta Limited American Depostary Shares (Each representing four equity shares)
VEDL
| $118K | ﹤0.01% |
+21,114
| New | +$118K |
|
946
AMC Networks
AMCX
$328M
| $117K | ﹤0.01% |
+5,003
| New | +$117K |
|
947
Comstock Resources
CRK
$4.65B
| $117K | ﹤0.01% |
26,858
+7,413
| +38% | +$32.3K |
|
948
Evolent Health
EVH
$1.07B
| $117K | ﹤0.01% |
16,528
-4,574
| -22% | -$32.4K |
|
949
Lear
LEA
$5.76B
| $117K | ﹤0.01% |
1,077
-10,871
| -91% | -$1.18M |
|
950
Penumbra
PEN
$10.6B
| $117K | ﹤0.01% |
655
-1,144
| -64% | -$204K |
|