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 |
Apple
AAPL
|
+$45.7M |
| 2 |
Walmart
WMT
|
+$45.2M |
| 3 |
VanEck Oil Services ETF
OIH
|
+$34.2M |
| 4 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$33.2M |
| 5 |
Citigroup
C
|
+$32.7M |
Top Sells
| 1 |
Amazon
AMZN
|
+$164M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$111M |
| 3 |
NVIDIA
NVDA
|
+$77.7M |
| 4 |
Meta Platforms (Facebook)
META
|
+$60.9M |
| 5 |
Procter & Gamble
PG
|
+$38.8M |
Sector Composition
| 1 | Technology | 21.73% |
| 2 | Consumer Discretionary | 10.23% |
| 3 | Healthcare | 8.76% |
| 4 | Industrials | 7.59% |
| 5 | Communication Services | 6.56% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1301
Korro Bio
KRRO
$292M
| $40K | ﹤0.01% |
1,629
+1,473
| +944% | +$36.2K |
|
1302
Rimini Street
RMNI
$417M
| $40K | ﹤0.01% |
9,720
-5,431
| -36% | -$22.4K |
|
1303
Direxion Daily 7-10 Year Treasury Bull 3X Shares
TYD
$51.7M
| $40K | ﹤0.01% |
1,270
-2,548
| -67% | -$80.3K |
|
1304
SPDR S&P Oil & Gas Equipment & Services ETF
XES
$156M
| $40K | ﹤0.01% |
545
-923
| -63% | -$67.7K |
|
1305
Procept Biorobotics
PRCT
$2.06B
| $39K | ﹤0.01% |
+1,404
| New | +$39K |
|
1306
Schwab U.S Small- Cap ETF
SCHA
$18.9B
| $39K | ﹤0.01% |
+1,878
| New | +$39K |
|
1307
BlackRock TCP Capital
TCPC
$606M
| $39K | ﹤0.01% |
3,810
+3,062
| +409% | +$31.3K |
|
1308
BARK
BARK
$149M
| $39K | ﹤0.01% |
27,140
-2,899
| -10% | -$4.17K |
|
1309
FirstService
FSV
$9.34B
| $39K | ﹤0.01% |
+277
| New | +$39K |
|
1310
iShares US Consumer Discretionary ETF
IYC
$1.75B
| $39K | ﹤0.01% |
612
+412
| +206% | +$26.3K |
|
1311
MillerKnoll
MLKN
$1.4B
| $39K | ﹤0.01% |
1,928
-5,565
| -74% | -$113K |
|
|
NFGC
1312
New Found Gold
NFGC
$501M
| $39K | ﹤0.01% |
7,941
+603
| +8% | +$2.96K |
|
1313
US Treasury 2 Year Note ETF
UTWO
$376M
| $39K | ﹤0.01% |
+808
| New | +$39K |
|
1314
Weave Communications
WEAV
$591M
| $39K | ﹤0.01% |
7,972
-7,992
| -50% | -$39.1K |
|
|
THCX
1315
DELISTED
AXS Cannabis ETF
THCX
| $39K | ﹤0.01% |
1,821
-1,861
| -51% | -$39.9K |
|
1316
Annexon
ANNX
$267M
| $38K | ﹤0.01% |
10,018
-34,742
| -78% | -$132K |
|
1317
Atara Biotherapeutics
ATRA
$84.7M
| $38K | ﹤0.01% |
526
+484
| +1,152% | +$35K |
|
1318
Editas Medicine
EDIT
$240M
| $38K | ﹤0.01% |
+5,296
| New | +$38K |
|
1319
Gilat Satellite Networks
GILT
$618M
| $38K | ﹤0.01% |
7,483
-55
| -0.7% | -$279 |
|
1320
PLAYSTUDIOS Inc
MYPS
$119M
| $38K | ﹤0.01% |
10,446
+4,713
| +82% | +$17.1K |
|
|
LL
1321
DELISTED
LL Flooring Holdings, Inc.
LL
| $38K | ﹤0.01% |
10,036
-12,613
| -56% | -$47.8K |
|
1322
China Automotive Systems
CAAS
$136M
| $37K | ﹤0.01% |
7,209
-4,839
| -40% | -$24.8K |
|
1323
Direxion Daily MSCI Mexico Bull 3X Shares
MEXX
$21.2M
| $37K | ﹤0.01% |
+1,405
| New | +$37K |
|
1324
Seadrill
SDRL
$2.05B
| $37K | ﹤0.01% |
+942
| New | +$37K |
|
1325
ThredUp
TDUP
$1.3B
| $37K | ﹤0.01% |
14,828
-13,889
| -48% | -$34.7K |
|