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
| Rank | Stock | Value |
|---|---|---|
| 1 |
Amazon
AMZN
|
+$168M |
| 2 |
NVIDIA
NVDA
|
+$141M |
| 3 |
TSMC
TSM
|
+$121M |
| 4 |
Meta Platforms (Facebook)
META
|
+$107M |
| 5 |
SPDR Gold Trust
GLD
|
+$103M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$174M |
| 2 |
Western Digital
WDC
|
+$87.7M |
| 3 |
Broadcom
AVGO
|
+$62.2M |
| 4 |
Direxion Daily Semiconductor Bull 3X ETF
SOXL
|
+$52M |
| 5 |
Netflix
NFLX
|
+$44.6M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.62% |
| 2 | Communication Services | 0.22% |
| 3 | Consumer Discretionary | 0.21% |
| 4 | Healthcare | 0.2% |
| 5 | Industrials | 0.1% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2701
Chord Energy
CHRD
$7.68B
| $819K | ﹤0.01% |
+5,762
| New | +$628K |
|
|
LINE
2702
Lineage Inc
LINE
$10.1B
| $818K | ﹤0.01% |
24,976
+14,745
| +144% | +$546K |
|
2703
CALL
Viper Energy
VNOM
$8.43B
| $818K | ﹤0.01% |
17,400
+13,200
| +314% | +$566K |
|
2704
PUT
monday.com
MNDY
$3.82B
| $815K | ﹤0.01% |
11,800
-16,900
| -59% | -$1.62M |
|
|
ORLA
2705
Orla Mining
ORLA
$3.36B
| $815K | ﹤0.01% |
+50,543
| New | +$839K |
|
2706
SK Telecom
SKM
$11.4B
| $815K | ﹤0.01% |
27,823
+26,697
| +2,371% | +$736K |
|
2707
CALL
Butterfly Network
BFLY
$1.86B
| $814K | ﹤0.01% |
201,400
+14,600
| +8% | +$56.4K |
|
|
TIGR
2708
PUT
UP Fintech Holding
TIGR
$856M
| $813K | ﹤0.01% |
129,100
-591,700
| -82% | -$4.82M |
|
2709
CALL
Ovintiv
OVV
$17B
| $813K | ﹤0.01% |
13,700
-17,600
| -56% | -$849K |
|
2710
CALL
TransDigm Group
TDG
$70.7B
| $811K | ﹤0.01% |
700
-100
| -13% | -$131K |
|
2711
JetBlue
JBLU
$2.13B
| $811K | ﹤0.01% |
183,412
-297,914
| -62% | -$1.51M |
|
2712
CALL
Coca-Cola Femsa
KOF
$22.5B
| $810K | ﹤0.01% |
8,300
-1,400
| -14% | -$145K |
|
2713
CALL
FLEX LNG
FLNG
$1.69B
| $808K | ﹤0.01% |
27,200
+20,800
| +325% | +$575K |
|
2714
Corebridge Financial
CRBG
$14.3B
| $806K | ﹤0.01% |
+33,790
| New | +$946K |
|
2715
PUT
Wingstop
WING
$3.8B
| $806K | ﹤0.01% |
5,200
-11,800
| -69% | -$2.84M |
|
2716
PUT
HubSpot
HUBS
$12.9B
| $806K | ﹤0.01% |
3,300
+1,400
| +74% | +$393K |
|
2717
CALL
Universal Health Services
UHS
$10.2B
| $805K | ﹤0.01% |
4,500
-15,100
| -77% | -$3.1M |
|
2718
ProShares UltraShort S&P500
SDS
$435M
| $805K | ﹤0.01% |
10,699
+8,373
| +360% | +$581K |
|
2719
United States Gasoline Fund
UGA
$146M
| $805K | ﹤0.01% |
7,789
+7,690
| +7,768% | +$591K |
|
2720
PUT
Eversource Energy
ES
$28.1B
| $804K | ﹤0.01% |
11,600
-9,100
| -44% | -$643K |
|
2721
PUT
Ryanair
RYAAY
$30B
| $803K | ﹤0.01% |
13,900
+13,500
| +3,375% | +$891K |
|
2722
Replimune Group
REPL
$454M
| $802K | ﹤0.01% |
104,875
+92,518
| +749% | +$707K |
|
|
ESPR
2723
CALL
DELISTED
Esperion Therapeutics
ESPR
| $802K | ﹤0.01% |
+292,700
| New | +$927K |
|
2724
CALL
CoreCivic
CXW
$2.94B
| $802K | ﹤0.01% |
42,400
+6,000
| +16% | +$113K |
|
2725
Amdocs
DOX
$6.03B
| $802K | ﹤0.01% |
12,282
+6,888
| +128% | +$504K |
|
Similar funds
Simplex Trading's Q1 2026 Portfolio in Review
As of Q1 2026, Simplex Trading held 10,500 positions worth $149B, down 16% from $177B the previous quarter. Its ten largest holdings account for 51% of the portfolio.
Simplex Trading withdrew a net $18.1B in Q1 2026, closing 1,574 positions and reducing 3,926 holdings. Its most notable exit was Direxion Daily Semiconductor Bull 3X ETF, an estimated $52M position sold in full.
By sector, the portfolio is most concentrated in Technology at 0.62% of assets, up from 0.59% a quarter earlier, followed by Communication Services and Consumer Discretionary.
Against the trend, Simplex Trading opened a new position in Amazon worth $159M.
- Simplex Trading's largest Q1 2026 buy was Amazon: 764,884 shares worth $159M.
- Simplex Trading added most to NVIDIA in Q1 2026, an estimated $141M increase.
- Simplex Trading's biggest Q1 2026 reduction was Apple, cutting an estimated $174M.
- Simplex Trading fully exited Direxion Daily Semiconductor Bull 3X ETF in Q1 2026, selling an estimated $52M.
- Simplex Trading's ten largest holdings make up 51% of its $149B portfolio in Q1 2026.
- Simplex Trading opened 2,156 new positions and closed 1,574 in Q1 2026.
- Simplex Trading's portfolio value fell 16% quarter-over-quarter to $149B.
Based on Simplex Trading's 13F filing for Q1 2026, filed 14 May 2026.