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 |
Boeing
BA
|
+$49.5M |
| 2 |
Pinduoduo
PDD
|
+$45.3M |
| 3 |
Microsoft
MSFT
|
+$42.5M |
| 4 |
Apple
AAPL
|
+$33.3M |
| 5 |
Direxion Daily Semiconductor Bull 3X Shares
SOXL
|
+$25.4M |
Top Sells
| 1 |
Broadcom
AVGO
|
+$95.4M |
| 2 |
Citigroup
C
|
+$57.9M |
| 3 |
Pfizer
PFE
|
+$55.9M |
| 4 |
TSMC
TSM
|
+$40.4M |
| 5 |
Starbucks
SBUX
|
+$40.4M |
Sector Composition
| 1 | Technology | 23.11% |
| 2 | Consumer Discretionary | 16.53% |
| 3 | Healthcare | 8.58% |
| 4 | Industrials | 7.58% |
| 5 | Financials | 7.29% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
AMPS
1326
DELISTED
Altus Power, Inc.
AMPS
| $41K | ﹤0.01% |
+13,114
| New | +$41K |
|
1327
Dynagas LNG Partners
DLNG
$141M
| $41K | ﹤0.01% |
10,910
-1,867
| -15% | -$7.02K |
|
1328
iShares MSCI Pacific ex Japan ETF
EPP
$1.85B
| $41K | ﹤0.01% |
846
+361
| +74% | +$17.5K |
|
1329
GraniteShares 2x Short NVDA Daily ETF
NVD
$46.9M
| $41K | ﹤0.01% |
958
-946
| -50% | -$40.5K |
|
1330
Outdoor Holding Company Common Stock
POWW
$178M
| $41K | ﹤0.01% |
29,155
-6,486
| -18% | -$9.12K |
|
1331
SkyWater Technology
SKYT
$510M
| $41K | ﹤0.01% |
4,622
-676
| -13% | -$6K |
|
1332
Unisys
UIS
$282M
| $41K | ﹤0.01% |
+7,357
| New | +$41K |
|
|
OKLO
1333
Oklo
OKLO
$12.2B
| $41K | ﹤0.01% |
5,141
-34,751
| -87% | -$277K |
|
|
LICY
1334
DELISTED
Li-Cycle Holdings Corp.
LICY
| $41K | ﹤0.01% |
18,940
+13,952
| +280% | +$30.2K |
|
1335
Appian
APPN
$2.27B
| $40K | ﹤0.01% |
1,195
-17,861
| -94% | -$598K |
|
1336
Benchmark Electronics
BHE
$1.41B
| $40K | ﹤0.01% |
918
+225
| +32% | +$9.8K |
|
1337
Design Therapeutics
DSGN
$337M
| $40K | ﹤0.01% |
7,602
+6,307
| +487% | +$33.2K |
|
1338
Enhabit
EHAB
$402M
| $40K | ﹤0.01% |
5,187
+1,539
| +42% | +$11.9K |
|
1339
Future Fuel
FF
$170M
| $40K | ﹤0.01% |
7,074
-11,754
| -62% | -$66.5K |
|
1340
St. Joe Company
JOE
$3.01B
| $40K | ﹤0.01% |
697
-42,658
| -98% | -$2.45M |
|
1341
Martin Midstream Partners
MMLP
$121M
| $40K | ﹤0.01% |
11,062
+9,486
| +602% | +$34.3K |
|
1342
CarParts.com
PRTS
$43.8M
| $40K | ﹤0.01% |
44,799
+37,372
| +503% | +$33.4K |
|
1343
Relmada Therapeutics
RLMD
$51.4M
| $40K | ﹤0.01% |
12,506
-28,764
| -70% | -$92K |
|
1344
Vanguard Industrials ETF
VIS
$6.13B
| $40K | ﹤0.01% |
156
+137
| +721% | +$35.1K |
|
|
VXRT
1345
DELISTED
Vaxart
VXRT
| $40K | ﹤0.01% |
48,242
-50,034
| -51% | -$41.5K |
|
1346
United States Brent Oil Fund
BNO
$102M
| $39K | ﹤0.01% |
1,378
-489
| -26% | -$13.8K |
|
1347
Fidelity MSCI Utilities Index ETF
FUTY
$1.98B
| $39K | ﹤0.01% |
+761
| New | +$39K |
|
1348
Gran Tierra Energy
GTE
$136M
| $39K | ﹤0.01% |
+6,271
| New | +$39K |
|
|
LAND
1349
Gladstone Land Corp
LAND
$322M
| $39K | ﹤0.01% |
+2,825
| New | +$39K |
|
1350
Alliant Energy
LNT
$16.7B
| $39K | ﹤0.01% |
657
-3,358
| -84% | -$199K |
|