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 |
Boeing
BA
|
+$49.5M |
| 2 |
Pinduoduo
PDD
|
+$45.3M |
| 3 |
Microsoft
MSFT
|
+$42.5M |
| 4 |
Apple
AAPL
|
+$33.3M |
| 5 |
Direxion Daily Semiconductor Bull 3X Shares
SOXL
|
+$25.4M |
Top Sells
| 1 |
Broadcom
AVGO
|
+$95.4M |
| 2 |
Citigroup
C
|
+$57.9M |
| 3 |
Pfizer
PFE
|
+$55.9M |
| 4 |
TSMC
TSM
|
+$40.4M |
| 5 |
Starbucks
SBUX
|
+$40.4M |
Sector Composition
| 1 | Technology | 23.11% |
| 2 | Consumer Discretionary | 16.53% |
| 3 | Healthcare | 8.58% |
| 4 | Industrials | 7.58% |
| 5 | Financials | 7.29% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
526
Tower Semiconductor
TSEM
$7.52B
| $702K | ﹤0.01% |
15,863
-80,244
| -83% | -$3.55M |
|
527
Amphenol
APH
$146B
| $698K | ﹤0.01% |
10,719
-37,377
| -78% | -$2.43M |
|
528
Insight Enterprises
NSIT
$3.92B
| $698K | ﹤0.01% |
+3,244
| New | +$698K |
|
529
Iridium Communications
IRDM
$2.01B
| $697K | ﹤0.01% |
+22,903
| New | +$697K |
|
530
Planet Fitness
PLNT
$8.52B
| $695K | ﹤0.01% |
8,563
-21,654
| -72% | -$1.76M |
|
531
Genius Sports
GENI
$3.02B
| $692K | ﹤0.01% |
88,302
+3,896
| +5% | +$30.5K |
|
532
SPDR S&P Metals & Mining ETF
XME
$2.37B
| $690K | ﹤0.01% |
+10,844
| New | +$690K |
|
533
Teladoc Health
TDOC
$1.33B
| $689K | ﹤0.01% |
+75,056
| New | +$689K |
|
534
Direxion Daily Junior Gold Miners Index Bull 2X Shares
JNUG
$485M
| $687K | ﹤0.01% |
14,567
-54,344
| -79% | -$2.56M |
|
535
Krispy Kreme
DNUT
$507M
| $684K | ﹤0.01% |
63,774
+27,423
| +75% | +$294K |
|
536
Vivid Seats
SEAT
$97.6M
| $682K | ﹤0.01% |
9,226
+3,566
| +63% | +$264K |
|
537
Rogers Corp
ROG
$1.44B
| $680K | ﹤0.01% |
6,025
+202
| +3% | +$22.8K |
|
538
Array Technologies
ARRY
$1.24B
| $677K | ﹤0.01% |
102,688
+35,181
| +52% | +$232K |
|
539
Knight Transportation
KNX
$6.77B
| $675K | ﹤0.01% |
12,527
-52,663
| -81% | -$2.84M |
|
540
CVR Partners
UAN
$904M
| $675K | ﹤0.01% |
10,064
-5,200
| -34% | -$349K |
|
541
Saia
SAIA
$8.05B
| $673K | ﹤0.01% |
+1,540
| New | +$673K |
|
542
Amplify Junior Silver Miners ETF
SILJ
$2.17B
| $666K | ﹤0.01% |
51,719
-220,819
| -81% | -$2.84M |
|
543
Limoneira
LMNR
$271M
| $658K | ﹤0.01% |
24,861
+24,798
| +39,362% | +$656K |
|
544
TransAlta
TAC
$3.74B
| $658K | ﹤0.01% |
63,599
+59,595
| +1,488% | +$617K |
|
|
BITF
545
Bitfarms
BITF
$967M
| $643K | ﹤0.01% |
305,129
-10,280
| -3% | -$21.7K |
|
546
2x Long VIX Futures ETF
UVIX
$445M
| $640K | ﹤0.01% |
+13,564
| New | +$640K |
|
547
Invesco DB Commodity Index Tracking Fund
DBC
$1.28B
| $639K | ﹤0.01% |
28,711
-1,575
| -5% | -$35.1K |
|
548
Aecom
ACM
$16.6B
| $638K | ﹤0.01% |
+6,184
| New | +$638K |
|
|
CMPS
549
Compass Pathways
CMPS
$496M
| $637K | ﹤0.01% |
101,258
+79,766
| +371% | +$502K |
|
550
National Grid
NGG
$69.9B
| $637K | ﹤0.01% |
9,576
+9,391
| +5,076% | +$625K |
|