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 | |
|---|---|---|---|---|---|---|
|
TSVT
1401
DELISTED
2seventy bio
TSVT
| $50K | ﹤0.01% |
9,491
+1,394
| +17% | +$7.34K |
|
1402
Capitol Federal Financial
CFFN
$851M
| $49K | ﹤0.01% |
8,330
+3,324
| +66% | +$19.6K |
|
1403
Cogent Biosciences
COGT
$1.78B
| $49K | ﹤0.01% |
+7,303
| New | +$49K |
|
1404
Invesco CurrencyShares British Pound Sterling Trust
FXB
$91.2M
| $49K | ﹤0.01% |
+404
| New | +$49K |
|
1405
Ribbon Communications
RBBN
$703M
| $49K | ﹤0.01% |
15,451
+295
| +2% | +$936 |
|
1406
Dr. Reddy's Laboratories
RDY
$12.3B
| $49K | ﹤0.01% |
3,375
+2,035
| +152% | +$29.5K |
|
1407
Savara
SVRA
$622M
| $49K | ﹤0.01% |
10,019
+7,023
| +234% | +$34.3K |
|
1408
Beyond Air
XAIR
$15.6M
| $49K | ﹤0.01% |
1,417
+1,016
| +253% | +$35.1K |
|
1409
StealthGas
GASS
$264M
| $48K | ﹤0.01% |
8,202
+7,791
| +1,896% | +$45.6K |
|
1410
DocGo
DCGO
$152M
| $47K | ﹤0.01% |
11,719
-59,952
| -84% | -$240K |
|
1411
iShares S&P Small-Cap 600 Value ETF
IJS
$6.75B
| $47K | ﹤0.01% |
+466
| New | +$47K |
|
1412
AudioEye
AEYE
$169M
| $47K | ﹤0.01% |
4,753
+2,808
| +144% | +$27.8K |
|
|
AUTL
1413
Autolus Therapeutics
AUTL
$362M
| $47K | ﹤0.01% |
7,417
-6,274
| -46% | -$39.8K |
|
1414
Listed Funds Trust Roundhill Magnificent Seven ETF
MAGS
$2.91B
| $47K | ﹤0.01% |
1,217
-257
| -17% | -$9.93K |
|
1415
Portillo's
PTLO
$457M
| $47K | ﹤0.01% |
+3,319
| New | +$47K |
|
1416
Vir Biotechnology
VIR
$720M
| $47K | ﹤0.01% |
4,732
+2,938
| +164% | +$29.2K |
|
1417
Vitesse Energy
VTS
$927M
| $47K | ﹤0.01% |
2,000
-2,513
| -56% | -$59.1K |
|
1418
TruBridge
TBRG
$321M
| $47K | ﹤0.01% |
5,178
+4,510
| +675% | +$40.9K |
|
|
RPT
1419
Rithm Property Trust Inc.
RPT
$121M
| $47K | ﹤0.01% |
12,618
+6,672
| +112% | +$24.9K |
|
|
PRMW
1420
DELISTED
Primo Water Corporation
PRMW
| $47K | ﹤0.01% |
+2,628
| New | +$47K |
|
1421
Algoma Steel
ASTL
$474M
| $46K | ﹤0.01% |
5,522
-139,758
| -96% | -$1.16M |
|
1422
Boston Omaha
BOC
$425M
| $46K | ﹤0.01% |
2,985
-2,409
| -45% | -$37.1K |
|
1423
CVRx
CVRX
$187M
| $46K | ﹤0.01% |
2,579
-6,856
| -73% | -$122K |
|
1424
Global Water Resources
GWRS
$276M
| $46K | ﹤0.01% |
3,614
+1,081
| +43% | +$13.8K |
|
1425
M/I Homes
MHO
$4.02B
| $46K | ﹤0.01% |
+341
| New | +$46K |
|