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
|
+$258M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
+$75.7M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
+$67.2M |
| 4 |
Alphabet (Google) Class C
GOOG
|
+$59.4M |
| 5 |
Intel
INTC
|
+$45.8M |
Top Sells
| 1 |
SPDR S&P 500 ETF Trust
SPY
|
+$56.8M |
| 2 |
iShares Silver Trust
SLV
|
+$45.9M |
| 3 |
Ford
F
|
+$32.5M |
| 4 |
Exxon Mobil
XOM
|
+$20.4M |
| 5 |
Caterpillar
CAT
|
+$19.2M |
Sector Composition
| 1 | Technology | 26.01% |
| 2 | Consumer Discretionary | 9.82% |
| 3 | Communication Services | 9.82% |
| 4 | Financials | 8.68% |
| 5 | Healthcare | 6.23% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1076
CubeSmart
CUBE
$9.29B
| $119K | ﹤0.01% |
2,800
-12,061
| -81% | -$513K |
|
1077
DaVita
DVA
$9.46B
| $119K | ﹤0.01% |
+1,500
| New | +$119K |
|
|
AMTI
1078
DELISTED
Applied Molecular Transport Inc. Common Stock
AMTI
| $119K | ﹤0.01% |
40,912
+40,558
| +11,457% | +$118K |
|
1079
Cigna
CI
$80.7B
| $118K | ﹤0.01% |
+451
| New | +$118K |
|
|
FENG
1080
Phoenix New Media
FENG
$28.2M
| $118K | ﹤0.01% |
+23,689
| New | +$118K |
|
1081
National Beverage
FIZZ
$3.68B
| $118K | ﹤0.01% |
2,420
+1,475
| +156% | +$71.9K |
|
1082
-1x Short VIX Futures ETF
SVIX
$196M
| $118K | ﹤0.01% |
+11,372
| New | +$118K |
|
1083
Apyx Medical
APYX
$74.5M
| $117K | ﹤0.01% |
+20,112
| New | +$117K |
|
1084
Altisource Portfolio Solutions
ASPS
$125M
| $117K | ﹤0.01% |
1,364
+380
| +39% | +$32.6K |
|
1085
Berry Corp
BRY
$251M
| $117K | ﹤0.01% |
15,436
+5,659
| +58% | +$42.9K |
|
1086
Ginkgo Bioworks
DNA
$618M
| $117K | ﹤0.01% |
1,236
-4,909
| -80% | -$465K |
|
1087
Phreesia
PHR
$1.52B
| $117K | ﹤0.01% |
+4,687
| New | +$117K |
|
1088
SPDR Portfolio Long Term Treasury ETF
SPTL
$11.8B
| $116K | ﹤0.01% |
3,520
-4,310
| -55% | -$142K |
|
|
SVM
1089
Silvercorp Metals
SVM
$1.13B
| $116K | ﹤0.01% |
46,960
+44,109
| +1,547% | +$109K |
|
|
AFIB
1090
DELISTED
Acutus Medical, Inc. Common Stock
AFIB
| $116K | ﹤0.01% |
103,997
+52,390
| +102% | +$58.4K |
|
1091
Arrowhead Research
ARWR
$3.99B
| $115K | ﹤0.01% |
3,270
+722
| +28% | +$25.4K |
|
1092
Dorman Products
DORM
$4.86B
| $115K | ﹤0.01% |
1,051
-116
| -10% | -$12.7K |
|
|
SOL
1093
Emeren Group
SOL
$96.5M
| $115K | ﹤0.01% |
24,216
-7,598
| -24% | -$36.1K |
|
|
SLCA
1094
DELISTED
U.S. SILICA HOLDINGS, INC.
SLCA
| $115K | ﹤0.01% |
10,111
-151,024
| -94% | -$1.72M |
|
|
SWIR
1095
DELISTED
Sierra Wireless
SWIR
| $115K | ﹤0.01% |
4,951
+1,744
| +54% | +$40.5K |
|
1096
Murphy USA
MUSA
$7.26B
| $114K | ﹤0.01% |
492
-410
| -45% | -$95K |
|
1097
Soluna Holdings
SLNH
$21.1M
| $114K | ﹤0.01% |
1,124
+932
| +485% | +$94.5K |
|
1098
SSR Mining
SSRM
$4.62B
| $114K | ﹤0.01% |
6,846
-81,367
| -92% | -$1.35M |
|
1099
Cabot Corp
CBT
$4.21B
| $113K | ﹤0.01% |
+1,784
| New | +$113K |
|
|
DRD
1100
DRDGold
DRD
$1.97B
| $113K | ﹤0.01% |
19,294
+14,761
| +326% | +$86.5K |
|