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
|
+$258M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
+$75.7M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
+$67.2M |
| 4 |
Alphabet (Google) Class C
GOOG
|
+$59.4M |
| 5 |
Intel
INTC
|
+$45.8M |
Top Sells
| 1 |
SPDR S&P 500 ETF Trust
SPY
|
+$56.8M |
| 2 |
iShares Silver Trust
SLV
|
+$45.9M |
| 3 |
Ford
F
|
+$32.5M |
| 4 |
Exxon Mobil
XOM
|
+$20.4M |
| 5 |
Caterpillar
CAT
|
+$19.2M |
Sector Composition
| 1 | Technology | 26.01% |
| 2 | Consumer Discretionary | 9.82% |
| 3 | Communication Services | 9.82% |
| 4 | Financials | 8.68% |
| 5 | Healthcare | 6.23% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
576
Alta Equipment Group
ALTG
$246M
| $467K | ﹤0.01% |
52,160
+51,916
| +21,277% | +$465K |
|
577
DraftKings
DKNG
$22.7B
| $463K | ﹤0.01% |
39,726
-417,722
| -91% | -$4.87M |
|
578
Frontline
FRO
$5.02B
| $463K | ﹤0.01% |
52,330
+18,918
| +57% | +$167K |
|
579
Murphy Oil
MUR
$3.72B
| $460K | ﹤0.01% |
15,260
+1,299
| +9% | +$39.2K |
|
580
Apellis Pharmaceuticals
APLS
$3.29B
| $459K | ﹤0.01% |
10,164
+7,197
| +243% | +$325K |
|
581
Cedar Fair
FUN
$2.19B
| $459K | ﹤0.01% |
10,469
+440
| +4% | +$19.3K |
|
582
Greenidge Generation Holdings
GREE
$21.6M
| $453K | ﹤0.01% |
17,865
-802
| -4% | -$20.3K |
|
583
Light & Wonder
LNW
$7.43B
| $452K | ﹤0.01% |
+9,631
| New | +$452K |
|
584
Melco Resorts & Entertainment
MLCO
$3.8B
| $451K | ﹤0.01% |
78,532
+43,478
| +124% | +$250K |
|
585
Safe Bulkers
SB
$458M
| $451K | ﹤0.01% |
118,227
-17,618
| -13% | -$67.2K |
|
|
SRG
586
Seritage Growth Properties
SRG
$251M
| $451K | ﹤0.01% |
86,596
+15,628
| +22% | +$81.4K |
|
587
Invesco DB US Dollar Index Bearish Fund
UDN
$147M
| $447K | ﹤0.01% |
24,283
-9,864
| -29% | -$182K |
|
588
Celldex Therapeutics
CLDX
$1.66B
| $446K | ﹤0.01% |
16,546
+4,294
| +35% | +$116K |
|
589
Teucrium Sugar Fund
CANE
$12.5M
| $445K | ﹤0.01% |
47,757
+35,890
| +302% | +$334K |
|
590
iShares Core S&P Mid-Cap ETF
IJH
$100B
| $445K | ﹤0.01% |
+9,850
| New | +$445K |
|
591
Yext
YEXT
$1.04B
| $445K | ﹤0.01% |
93,292
-38,711
| -29% | -$185K |
|
592
Resideo Technologies
REZI
$5.39B
| $444K | ﹤0.01% |
22,891
+16,273
| +246% | +$316K |
|
593
Petco
WOOF
$1B
| $443K | ﹤0.01% |
+30,064
| New | +$443K |
|
594
Globalstar
GSAT
$3.94B
| $442K | ﹤0.01% |
23,995
-14,627
| -38% | -$269K |
|
595
Invesco DB Energy Fund
DBE
$49.9M
| $439K | ﹤0.01% |
16,810
+14,510
| +631% | +$379K |
|
596
SandRidge Energy
SD
$429M
| $439K | ﹤0.01% |
28,063
-53,969
| -66% | -$844K |
|
597
Nabors Industries
NBR
$619M
| $438K | ﹤0.01% |
+3,277
| New | +$438K |
|
598
Terex
TEX
$3.45B
| $437K | ﹤0.01% |
15,990
+12,371
| +342% | +$338K |
|
599
US Global Jets ETF
JETS
$822M
| $436K | ﹤0.01% |
26,478
-308,573
| -92% | -$5.08M |
|
600
Synchrony
SYF
$27.8B
| $436K | ﹤0.01% |
15,796
-37,695
| -70% | -$1.04M |
|