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 |
Alibaba
BABA
|
+$117M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$97.6M |
| 3 |
Walt Disney
DIS
|
+$73.4M |
| 4 |
Citigroup
C
|
+$45.8M |
| 5 |
KraneShares CSI China Internet ETF
KWEB
|
+$41.5M |
Top Sells
| 1 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$149M |
| 2 |
Amazon
AMZN
|
+$107M |
| 3 |
SPDR Gold Trust
GLD
|
+$58.6M |
| 4 |
Coinbase
COIN
|
+$56.5M |
| 5 |
NVIDIA
NVDA
|
+$48.2M |
Sector Composition
| 1 | Technology | 16.06% |
| 2 | Consumer Discretionary | 14.45% |
| 3 | Communication Services | 10.03% |
| 4 | Financials | 9.44% |
| 5 | Healthcare | 9.18% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1326
Riley Exploration Permian
REPX
$616M
| $61K | ﹤0.01% |
2,265
+1,975
| +681% | +$53.2K |
|
1327
ProShares Ultra Euro
ULE
$7.32M
| $61K | ﹤0.01% |
5,199
+1,283
| +33% | +$15.1K |
|
1328
Associated Banc-Corp
ASB
$4.4B
| $60K | ﹤0.01% |
+2,847
| New | +$60K |
|
1329
Atlas Lithium Corp
ATLX
$93M
| $59K | ﹤0.01% |
1,918
+240
| +14% | +$7.38K |
|
1330
Clarus
CLAR
$149M
| $59K | ﹤0.01% |
8,584
-720
| -8% | -$4.95K |
|
1331
Cooper-Standard Automotive
CPS
$687M
| $59K | ﹤0.01% |
3,059
-5,492
| -64% | -$106K |
|
1332
Funko
FNKO
$189M
| $59K | ﹤0.01% |
7,751
-1,268
| -14% | -$9.65K |
|
1333
CAE Inc
CAE
$8.65B
| $58K | ﹤0.01% |
+2,711
| New | +$58K |
|
|
KC
1334
Kingsoft Cloud Holdings
KC
$4.51B
| $58K | ﹤0.01% |
15,595
+11,876
| +319% | +$44.2K |
|
1335
Provident Financial Services
PFS
$2.65B
| $58K | ﹤0.01% |
+3,244
| New | +$58K |
|
|
TPIC
1336
DELISTED
TPI Composites
TPIC
| $58K | ﹤0.01% |
14,087
+13,670
| +3,278% | +$56.3K |
|
1337
Upland Software
UPLD
$72.2M
| $58K | ﹤0.01% |
+13,713
| New | +$58K |
|
1338
Yext
YEXT
$1.11B
| $58K | ﹤0.01% |
+9,887
| New | +$58K |
|
1339
Delcath Systems
DCTH
$411M
| $57K | ﹤0.01% |
13,814
+12,403
| +879% | +$51.2K |
|
1340
89bio
ETNB
$2.22B
| $57K | ﹤0.01% |
5,133
-97,542
| -95% | -$1.08M |
|
1341
Fox Factory Holding Corp
FOXF
$1.1B
| $57K | ﹤0.01% |
+855
| New | +$57K |
|
1342
Douglas Dynamics
PLOW
$763M
| $57K | ﹤0.01% |
+1,953
| New | +$57K |
|
1343
Artivion
AORT
$1.95B
| $56K | ﹤0.01% |
+3,182
| New | +$56K |
|
1344
Archrock
AROC
$4.3B
| $56K | ﹤0.01% |
3,638
-4,606
| -56% | -$70.9K |
|
1345
Monte Rosa Therapeutics
GLUE
$428M
| $56K | ﹤0.01% |
10,043
-16,202
| -62% | -$90.3K |
|
1346
Humacyte
HUMA
$284M
| $56K | ﹤0.01% |
19,993
+9,752
| +95% | +$27.3K |
|
1347
NovaGold Resources
NG
$2.95B
| $56K | ﹤0.01% |
15,238
+11,920
| +359% | +$43.8K |
|
1348
Nano X Imaging
NNOX
$266M
| $56K | ﹤0.01% |
8,873
-6,188
| -41% | -$39.1K |
|
|
PSTL
1349
Postal Realty Trust
PSTL
$402M
| $56K | ﹤0.01% |
3,847
+3,258
| +553% | +$47.4K |
|
1350
ProShares Short 20+ Year Treasury ETF
TBF
$69.7M
| $56K | ﹤0.01% |
+2,539
| New | +$56K |
|