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 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$278M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$84.4M |
| 3 |
NVIDIA
NVDA
|
+$76.9M |
| 4 |
TSMC
TSM
|
+$74.9M |
| 5 |
Amazon
AMZN
|
+$53.5M |
Top Sells
| 1 |
Apple
AAPL
|
+$497M |
| 2 |
Strategy Inc Common Stock Class A
MSTR
|
+$73.7M |
| 3 |
Alibaba
BABA
|
+$49M |
| 4 |
Advanced Micro Devices
AMD
|
+$48.1M |
| 5 |
Uber
UBER
|
+$41.8M |
Sector Composition
| 1 | Technology | 22.9% |
| 2 | Consumer Discretionary | 12.26% |
| 3 | Healthcare | 9.52% |
| 4 | Communication Services | 8.42% |
| 5 | Financials | 7.07% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1426
AptarGroup
ATR
$8.91B
| $33K | ﹤0.01% |
224
+216
| +2,700% | +$31.8K |
|
1427
Eledon Pharmaceuticals
ELDN
$145M
| $33K | ﹤0.01% |
9,991
-446
| -4% | -$1.47K |
|
1428
Future Fuel
FF
$169M
| $33K | ﹤0.01% |
8,570
+4,258
| +99% | +$16.4K |
|
1429
Fulgent Genetics
FLGT
$670M
| $33K | ﹤0.01% |
+1,966
| New | +$33K |
|
1430
Ivanhoe Electric
IE
$1.14B
| $33K | ﹤0.01% |
5,775
-3,724
| -39% | -$21.3K |
|
1431
Mueller Water Products
MWA
$3.91B
| $33K | ﹤0.01% |
+1,321
| New | +$33K |
|
|
WPRT
1432
Westport Fuel Systems
WPRT
$40.8M
| $33K | ﹤0.01% |
8,936
-228
| -2% | -$842 |
|
|
ARTY
1433
iShares Future AI & Tech ETF
ARTY
$1.45B
| $33K | ﹤0.01% |
+1,078
| New | +$33K |
|
1434
Eversource Energy
ES
$24.4B
| $32K | ﹤0.01% |
+523
| New | +$32K |
|
1435
Direxion Daily FTSE Europe Bull 3x Shares
EURL
$39.8M
| $32K | ﹤0.01% |
+1,206
| New | +$32K |
|
1436
Cedar Fair
FUN
$2.38B
| $32K | ﹤0.01% |
911
-1,383
| -60% | -$48.6K |
|
|
JNPR
1437
DELISTED
Juniper Networks
JNPR
| $32K | ﹤0.01% |
901
-31,352
| -97% | -$1.11M |
|
1438
Milestone Pharmaceuticals
MIST
$167M
| $32K | ﹤0.01% |
40,636
+35,994
| +775% | +$28.3K |
|
1439
Blue Owl Capital
OBDC
$7.23B
| $32K | ﹤0.01% |
2,219
-49,933
| -96% | -$720K |
|
1440
Prelude Therapeutics
PRLD
$64M
| $32K | ﹤0.01% |
41,846
+23,032
| +122% | +$17.6K |
|
1441
QuickLogic
QUIK
$92.3M
| $32K | ﹤0.01% |
6,408
-2,834
| -31% | -$14.2K |
|
1442
Relay Therapeutics
RLAY
$688M
| $32K | ﹤0.01% |
12,521
-34,941
| -74% | -$89.3K |
|
1443
Gentherm
THRM
$1.06B
| $32K | ﹤0.01% |
+1,198
| New | +$32K |
|
|
UBX
1444
DELISTED
Unity Biotechnology
UBX
| $32K | ﹤0.01% |
+30,908
| New | +$32K |
|
1445
UDR
UDR
$12.7B
| $32K | ﹤0.01% |
710
-227
| -24% | -$10.2K |
|
1446
Astrana Health
ASTH
$1.38B
| $32K | ﹤0.01% |
1,063
-3,502
| -77% | -$105K |
|
|
LAR
1447
Lithium Argentina AG
LAR
$490M
| $32K | ﹤0.01% |
15,327
-48,728
| -76% | -$102K |
|
1448
Corbus Pharmaceuticals
CRBP
$116M
| $31K | ﹤0.01% |
5,873
+4,974
| +553% | +$26.3K |
|
1449
Dakota Gold
DC
$540M
| $31K | ﹤0.01% |
+11,889
| New | +$31K |
|
1450
Fresh Del Monte Produce
FDP
$1.71B
| $31K | ﹤0.01% |
1,006
-792
| -44% | -$24.4K |
|