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 | |
|---|---|---|---|---|---|---|
|
MPT
1501
CALL
Medical Properties Trust
MPT
$2.89B
| $3.02M | ﹤0.01% |
651,700
-90,500
| -12% | -$472K |
|
1502
CALL
CRISPR Therapeutics
CRSP
$4.58B
| $3.02M | ﹤0.01% |
63,400
-117,800
| -65% | -$6.21M |
|
1503
PUT
BRC Group Holdings
RILY
$277M
| $3.01M | ﹤0.01% |
410,600
-35,200
| -8% | -$263K |
|
1504
CALL
Gold Fields
GFI
$29.2B
| $2.99M | ﹤0.01% |
65,900
-162,400
| -71% | -$8.17M |
|
1505
PUT
Scorpio Tankers
STNG
$3.96B
| $2.99M | ﹤0.01% |
40,000
-70,200
| -64% | -$4.71M |
|
1506
Rockwell Automation
ROK
$51.4B
| $2.99M | ﹤0.01% |
8,320
+174
| +2% | +$68.7K |
|
1507
CALL
Xenon Pharmaceuticals
XENE
$6.32B
| $2.98M | ﹤0.01% |
51,300
+49,900
| +3,564% | +$2.3M |
|
1508
PUT
e.l.f. Beauty
ELF
$4.56B
| $2.98M | ﹤0.01% |
49,200
-14,700
| -23% | -$1.2M |
|
1509
CALL
Novavax
NVAX
$1.23B
| $2.98M | ﹤0.01% |
365,800
-262,700
| -42% | -$2.38M |
|
1510
PUT
Realty Income
O
$61.2B
| $2.97M | ﹤0.01% |
48,500
-68,200
| -58% | -$4.27M |
|
1511
PUT
SAP
SAP
$187B
| $2.96M | ﹤0.01% |
17,300
-2,300
| -12% | -$475K |
|
1512
CALL
Sony
SONY
$123B
| $2.96M | ﹤0.01% |
157,900
-37,200
| -19% | -$834K |
|
1513
CALL
BigBear.ai
BBAI
$1.32B
| $2.96M | ﹤0.01% |
840,300
-3,569,000
| -81% | -$16.6M |
|
|
SVM
1514
CALL
Silvercorp Metals
SVM
$2.13B
| $2.96M | ﹤0.01% |
275,200
+169,200
| +160% | +$1.86M |
|
1515
United States Brent Oil Fund
BNO
$815M
| $2.95M | ﹤0.01% |
+56,806
| New | +$2.11M |
|
|
USAR
1516
PUT
USA Rare Earth Inc
USAR
$3.46B
| $2.95M | ﹤0.01% |
194,700
-140,100
| -42% | -$2.72M |
|
1517
iShares National Muni Bond ETF
MUB
$45.1B
| $2.94M | ﹤0.01% |
27,683
+5,296
| +24% | +$569K |
|
|
GAP
1518
PUT
The Gap Inc
GAP
$6.84B
| $2.93M | ﹤0.01% |
121,100
-161,600
| -57% | -$4.28M |
|
1519
PUT
Tilray
TLRY
$479M
| $2.93M | ﹤0.01% |
452,400
-1,010,200
| -69% | -$7.88M |
|
1520
CALL
Yum China
YUMC
$14.9B
| $2.92M | ﹤0.01% |
59,800
-22,200
| -27% | -$1.15M |
|
1521
CALL
Franco-Nevada
FNV
$41.4B
| $2.92M | ﹤0.01% |
11,800
-4,700
| -28% | -$1.16M |
|
1522
PUT
Fidelity National Financial
FNF
$13.9B
| $2.91M | ﹤0.01% |
62,800
+62,000
| +7,750% | +$3.22M |
|
1523
Sibanye-Stillwater
SBSW
$5.92B
| $2.91M | ﹤0.01% |
236,318
-6,485
| -3% | -$101K |
|
1524
CALL
Shoals Technologies Group
SHLS
$1.58B
| $2.91M | ﹤0.01% |
+441,700
| New | +$3.62M |
|
1525
Align Technology
ALGN
$12B
| $2.88M | ﹤0.01% |
16,794
-5,982
| -26% | -$1.05M |
|
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.