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 |
Energy Select Sector SPDR Fund
XLE
|
+$93.9M |
| 2 |
Pfizer
PFE
|
+$89.5M |
| 3 |
Boeing
BA
|
+$66.7M |
| 4 |
Intel
INTC
|
+$60.2M |
| 5 |
Meta Platforms (Facebook)
META
|
+$52.5M |
Top Sells
| 1 |
NVIDIA
NVDA
|
+$146M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$109M |
| 3 |
Alibaba
BABA
|
+$81.8M |
| 4 |
Walt Disney
DIS
|
+$80.2M |
| 5 |
Citigroup
C
|
+$55.3M |
Sector Composition
| 1 | Technology | 19.03% |
| 2 | Healthcare | 13.86% |
| 3 | Consumer Discretionary | 12.44% |
| 4 | Industrials | 8.48% |
| 5 | Communication Services | 7.95% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
851
PIMCO 15+ Year US TIPS Index Exchange-Traded Fund
LTPZ
$693M
| $280K | ﹤0.01% |
5,057
-3,501
| -41% | -$194K |
|
852
Methanex
MEOH
$3B
| $280K | ﹤0.01% |
6,289
-4,825
| -43% | -$215K |
|
853
Avidity Biosciences
RNA
$5.99B
| $280K | ﹤0.01% |
+11,006
| New | +$280K |
|
854
Viper Energy
VNOM
$6.31B
| $279K | ﹤0.01% |
+7,257
| New | +$279K |
|
855
Enovis
ENOV
$1.85B
| $277K | ﹤0.01% |
+4,451
| New | +$277K |
|
856
MKS Inc
MKSI
$8.64B
| $277K | ﹤0.01% |
+2,085
| New | +$277K |
|
857
Olaplex Holdings
OLPX
$947M
| $277K | ﹤0.01% |
144,360
+111,887
| +345% | +$215K |
|
858
LSB Industries
LXU
$593M
| $276K | ﹤0.01% |
31,513
+14,443
| +85% | +$126K |
|
859
MACOM Technology Solutions
MTSI
$9.47B
| $276K | ﹤0.01% |
2,896
+1,184
| +69% | +$113K |
|
860
Syndax Pharmaceuticals
SNDX
$1.27B
| $276K | ﹤0.01% |
11,629
-52,401
| -82% | -$1.24M |
|
861
SouthState Bank Corp
SSB
$10.3B
| $276K | ﹤0.01% |
+3,246
| New | +$276K |
|
862
Genco Shipping & Trading
GNK
$804M
| $274K | ﹤0.01% |
+13,526
| New | +$274K |
|
|
RDFN
863
DELISTED
Redfin
RDFN
| $274K | ﹤0.01% |
+41,220
| New | +$274K |
|
864
Kadant
KAI
$3.6B
| $273K | ﹤0.01% |
833
+711
| +583% | +$233K |
|
865
Toyota
TM
$259B
| $272K | ﹤0.01% |
1,081
-28,301
| -96% | -$7.12M |
|
866
CryoPort
CYRX
$499M
| $271K | ﹤0.01% |
+15,362
| New | +$271K |
|
|
CBIO
867
Crescent Biopharma
CBIO
$179M
| $271K | ﹤0.01% |
907
+183
| +25% | +$54.7K |
|
868
Palomar
PLMR
$3.1B
| $271K | ﹤0.01% |
3,238
+2,519
| +350% | +$211K |
|
|
LAR
869
Lithium Argentina AG
LAR
$532M
| $271K | ﹤0.01% |
+50,355
| New | +$271K |
|
870
Intuit
INTU
$192B
| $270K | ﹤0.01% |
+416
| New | +$270K |
|
871
HUB Group
HUBG
$2.18B
| $269K | ﹤0.01% |
6,232
-3,976
| -39% | -$172K |
|
872
Qfin Holdings
QFIN
$4.02B
| $269K | ﹤0.01% |
14,632
+10,670
| +269% | +$196K |
|
873
Axcelis
ACLS
$3.01B
| $266K | ﹤0.01% |
2,387
+858
| +56% | +$95.6K |
|
874
Pulse Biosciences
PLSE
$1.19B
| $265K | ﹤0.01% |
30,505
-3,788
| -11% | -$32.9K |
|
875
New Oriental
EDU
$8.48B
| $264K | ﹤0.01% |
3,047
-4,235
| -58% | -$367K |
|