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 |
NVIDIA
NVDA
|
+$60M |
| 2 |
Microsoft
MSFT
|
+$58.6M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$52.5M |
| 4 |
PayPal
PYPL
|
+$40.9M |
| 5 |
Netflix
NFLX
|
+$29.7M |
Top Sells
| 1 |
Apple
AAPL
|
+$48.7M |
| 2 |
Walmart
WMT
|
+$45.2M |
| 3 |
Adobe
ADBE
|
+$40.6M |
| 4 |
VanEck Oil Services ETF
OIH
|
+$34.2M |
| 5 |
Enphase Energy
ENPH
|
+$27.2M |
Sector Composition
| 1 | Technology | 21.17% |
| 2 | Healthcare | 10.87% |
| 3 | Consumer Discretionary | 10.73% |
| 4 | Communication Services | 10.55% |
| 5 | Financials | 7.54% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
676
BigBear.ai
BBAI
$1.75B
| $334K | ﹤0.01% |
142,212
-71,685
| -34% | -$168K |
|
677
Advanced Energy
AEIS
$5.93B
| $331K | ﹤0.01% |
+2,970
| New | +$331K |
|
678
Ardelyx
ARDX
$1.6B
| $328K | ﹤0.01% |
+96,940
| New | +$328K |
|
679
Kanzhun
BZ
$11.2B
| $328K | ﹤0.01% |
21,833
+19,088
| +695% | +$287K |
|
680
Cytokinetics
CYTK
$6.22B
| $328K | ﹤0.01% |
10,073
+8,810
| +698% | +$287K |
|
681
LendingClub
LC
$1.86B
| $328K | ﹤0.01% |
33,726
-2,037
| -6% | -$19.8K |
|
682
Magnite
MGNI
$3.4B
| $328K | ﹤0.01% |
24,057
+12,330
| +105% | +$168K |
|
683
Varonis Systems
VRNS
$6.31B
| $327K | ﹤0.01% |
12,299
-7,869
| -39% | -$209K |
|
684
Upwork
UPWK
$2.11B
| $326K | ﹤0.01% |
35,008
+30,679
| +709% | +$286K |
|
685
Agios Pharmaceuticals
AGIO
$2.07B
| $324K | ﹤0.01% |
11,454
-3,380
| -23% | -$95.6K |
|
686
Schneider National
SNDR
$4.18B
| $320K | ﹤0.01% |
+11,163
| New | +$320K |
|
687
Zymeworks
ZYME
$1.15B
| $319K | ﹤0.01% |
37,024
+36,130
| +4,041% | +$311K |
|
688
Ambev
ABEV
$35.2B
| $317K | ﹤0.01% |
+99,914
| New | +$317K |
|
|
NVRO
689
DELISTED
NEVRO CORP.
NVRO
| $317K | ﹤0.01% |
12,471
+2,316
| +23% | +$58.9K |
|
690
Direxion Daily Homebuilders & Supplies Bull 3X Shares
NAIL
$607M
| $314K | ﹤0.01% |
4,134
+4,074
| +6,790% | +$309K |
|
|
ILPT
691
Industrial Logistics Properties Trust
ILPT
$415M
| $313K | ﹤0.01% |
+95,045
| New | +$313K |
|
692
Leggett & Platt
LEG
$1.35B
| $313K | ﹤0.01% |
+10,577
| New | +$313K |
|
|
GLOP
693
DELISTED
GASLOG PARTNERS LP
GLOP
| $311K | ﹤0.01% |
36,180
+30,120
| +497% | +$259K |
|
694
Coeur Mining
CDE
$9.6B
| $308K | ﹤0.01% |
108,644
-43,601
| -29% | -$124K |
|
695
Canadian National Railway
CNI
$57.7B
| $308K | ﹤0.01% |
+2,547
| New | +$308K |
|
696
CorMedix
CRMD
$955M
| $308K | ﹤0.01% |
77,696
+57,401
| +283% | +$228K |
|
697
Sotera Health
SHC
$4.47B
| $308K | ﹤0.01% |
16,374
-37,539
| -70% | -$706K |
|
698
Valvoline
VVV
$5B
| $308K | ﹤0.01% |
+8,231
| New | +$308K |
|
699
Eldorado Gold
EGO
$5.45B
| $307K | ﹤0.01% |
30,405
+23,267
| +326% | +$235K |
|
700
NextEra Energy, Inc.
NEE
$146B
| $307K | ﹤0.01% |
4,150
| – | – |
|