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 | |
|---|---|---|---|---|---|---|
|
BTCI
4626
NEOS Bitcoin High Income ETF
BTCI
$1.09B
| $151K | ﹤0.01% |
4,592
-1,499
| -25% | -$56.3K |
|
4627
Allison Transmission
ALSN
$9.51B
| $150K | ﹤0.01% |
+1,285
| New | +$146K |
|
4628
American Resources Corp
AREC
$183M
| $150K | ﹤0.01% |
+62,117
| New | +$198K |
|
4629
Kaspi.kz JSC
KSPI
$16.6B
| $150K | ﹤0.01% |
2,029
-1,575
| -44% | -$119K |
|
|
MAGN
4630
CALL
Magnera Corp
MAGN
$493M
| $150K | ﹤0.01% |
+15,800
| New | +$202K |
|
4631
PUT
Corbus Pharmaceuticals
CRBP
$165M
| $150K | ﹤0.01% |
+16,000
| New | +$135K |
|
4632
Lazard
LAZ
$4B
| $150K | ﹤0.01% |
3,532
+225
| +7% | +$11K |
|
4633
Simplify Exchange Traded Funds Simplify Bitcoin Strategy ETF
MAXI
$25.1M
| $150K | ﹤0.01% |
+15,728
| New | +$187K |
|
4634
UGI
UGI
$7.87B
| $150K | ﹤0.01% |
4,115
-12,856
| -76% | -$484K |
|
4635
PUT
Invesco Mortgage Capital
IVR
$759M
| $149K | ﹤0.01% |
+18,500
| New | +$158K |
|
4636
CALL
Fulgent Genetics
FLGT
$558M
| $149K | ﹤0.01% |
9,400
-43,200
| -82% | -$938K |
|
|
VLD
4637
PUT
DELISTED
Velo3D, Inc.
VLD
| $149K | ﹤0.01% |
+15,900
| New | +$149K |
|
4638
Steris
STE
$22.9B
| $149K | ﹤0.01% |
+675
| New | +$165K |
|
4639
Amplify CWP Enhanced Dividend Income ETF
DIVO
$7.45B
| $149K | ﹤0.01% |
3,327
+2,748
| +475% | +$126K |
|
|
PTRN
4640
CALL
Pattern Group Inc
PTRN
$4.07B
| $149K | ﹤0.01% |
12,000
+9,500
| +380% | +$117K |
|
4641
Tradr TSLA Bear Daily ETF
TSLQ
$156M
| $149K | ﹤0.01% |
6,052
-8,286
| -58% | -$174K |
|
4642
PUT
First Watch Restaurant Group
FWRG
$814M
| $149K | ﹤0.01% |
+14,200
| New | +$205K |
|
|
MCGA
4643
CALL
Yorkville Acquisition Corp
MCGA
$241M
| $149K | ﹤0.01% |
14,700
+14,300
| +3,575% | +$145K |
|
|
HOOW
4644
Roundhill HOOD WeeklyPay ETF
HOOW
$103M
| $149K | ﹤0.01% |
6,640
+797
| +14% | +$26.1K |
|
4645
CALL
Ryan Specialty Holdings
RYAN
$6.02B
| $148K | ﹤0.01% |
4,400
-27,300
| -86% | -$1.17M |
|
4646
CALL
Magnolia Oil & Gas
MGY
$5.93B
| $148K | ﹤0.01% |
4,700
+200
| +4% | +$5.35K |
|
4647
CALL
Regenxbio
RGNX
$616M
| $148K | ﹤0.01% |
17,700
+16,700
| +1,670% | +$175K |
|
4648
CALL
Camping World
CWH
$384M
| $148K | ﹤0.01% |
21,700
+7,800
| +56% | +$80.4K |
|
4649
NovoCure
NVCR
$1.76B
| $148K | ﹤0.01% |
13,561
+7,260
| +115% | +$90.7K |
|
|
KZR
4650
CALL
DELISTED
Kezar Life Sciences
KZR
| $148K | ﹤0.01% |
19,900
+400
| +2% | +$2.6K |
|
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.