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 | |
|---|---|---|---|---|---|---|
|
CADE
826
DELISTED
Cadence Bancorporation
CADE
| $164K | ﹤0.01% |
18,603
+17,791
| +2,191% | +$157K |
|
827
Wabash National
WNC
$463M
| $163K | ﹤0.01% |
+15,416
| New | +$163K |
|
|
PRVB
828
DELISTED
Provention Bio, Inc. Common Stock
PRVB
| $163K | ﹤0.01% |
11,619
+4,827
| +71% | +$67.7K |
|
|
TCP
829
DELISTED
TC Pipelines LP
TCP
| $163K | ﹤0.01% |
5,274
+2,561
| +94% | +$79.2K |
|
830
Glaukos
GKOS
$5.05B
| $162K | ﹤0.01% |
4,241
+3,712
| +702% | +$142K |
|
831
Light & Wonder
LNW
$7.46B
| $162K | ﹤0.01% |
10,521
+122
| +1% | +$1.88K |
|
832
Fox Factory Holding Corp
FOXF
$1.15B
| $161K | ﹤0.01% |
+1,954
| New | +$161K |
|
833
Liberty Energy
LBRT
$1.74B
| $161K | ﹤0.01% |
+29,480
| New | +$161K |
|
834
Viasat
VSAT
$3.99B
| $161K | ﹤0.01% |
4,211
-17,703
| -81% | -$677K |
|
|
SLCA
835
DELISTED
U.S. SILICA HOLDINGS, INC.
SLCA
| $161K | ﹤0.01% |
44,694
-13,111
| -23% | -$47.2K |
|
836
Avis
CAR
$5.5B
| $160K | ﹤0.01% |
7,000
-10,038
| -59% | -$229K |
|
837
Frontdoor
FTDR
$4.63B
| $160K | ﹤0.01% |
3,630
-4,956
| -58% | -$218K |
|
838
Manchester United
MANU
$2.84B
| $160K | ﹤0.01% |
10,134
-8,904
| -47% | -$141K |
|
839
Smith Micro Software
SMSI
$15.3M
| $160K | ﹤0.01% |
4,493
+193
| +4% | +$6.87K |
|
840
Materion
MTRN
$2.29B
| $159K | ﹤0.01% |
+2,600
| New | +$159K |
|
841
Alpha and Omega Semiconductor
AOSL
$846M
| $158K | ﹤0.01% |
14,549
-17,550
| -55% | -$191K |
|
842
CarGurus
CARG
$3.54B
| $158K | ﹤0.01% |
6,235
+4,201
| +207% | +$106K |
|
843
Vuzix
VUZI
$174M
| $157K | ﹤0.01% |
66,032
+7,292
| +12% | +$17.3K |
|
844
Markel Group
MKL
$24.3B
| $156K | ﹤0.01% |
170
| – | – |
|
|
ATHX
845
DELISTED
Athersys, Inc. Common Stock
ATHX
| $156K | ﹤0.01% |
2,272
+274
| +14% | +$18.8K |
|
846
Immersion
IMMR
$222M
| $155K | ﹤0.01% |
24,926
-1,936
| -7% | -$12K |
|
|
ISEE
847
DELISTED
IVERIC bio, Inc. Common Stock
ISEE
| $155K | ﹤0.01% |
30,489
+22,773
| +295% | +$116K |
|
|
TEN
848
Tsakos Energy Navigation Ltd.
TEN
$651M
| $154K | ﹤0.01% |
15,361
-16,259
| -51% | -$163K |
|
|
UHT
849
Universal Health Realty Income Trust
UHT
$567M
| $153K | ﹤0.01% |
+1,932
| New | +$153K |
|
850
Vanguard Industrials ETF
VIS
$6.11B
| $153K | ﹤0.01% |
+1,182
| New | +$153K |
|