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
|
+$113M |
| 2 |
SPDR Gold Trust
GLD
|
+$68.6M |
| 3 |
NVIDIA
NVDA
|
+$63.4M |
| 4 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$55.2M |
| 5 |
Apple
AAPL
|
+$54.9M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Netflix
NFLX
|
+$27.1M |
| 2 |
Qualcomm
QCOM
|
+$24.6M |
| 3 |
Walt Disney
DIS
|
+$21.2M |
| 4 |
Advanced Micro Devices
AMD
|
+$18.2M |
| 5 |
Snowflake
SNOW
|
+$16.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.44% |
| 2 | Consumer Discretionary | 0.32% |
| 3 | Healthcare | 0.22% |
| 4 | Financials | 0.17% |
| 5 | Communication Services | 0.15% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
4701
PUT
AMN Healthcare
AMN
$1.35B
| $144K | ﹤0.01% |
1,700
-14,400
| -89% | -$1.37M |
|
|
CCC
4702
PUT
CCC Intelligent Solutions
CCC
$3.55B
| $144K | ﹤0.01% |
+10,800
| New | +$119K |
|
4703
CALL
Daktronics
DAKT
$946M
| $144K | ﹤0.01% |
16,200
-1,600
| -9% | -$12.6K |
|
|
XRN
4704
CALL
Chiron Real Estate Inc
XRN
$535M
| $144K | ﹤0.01% |
3,220
-640
| -17% | -$30.7K |
|
|
PBT
4705
PUT
Permian Basin Royalty Trust
PBT
$1.36B
| $144K | ﹤0.01% |
6,800
-3,600
| -35% | -$81.6K |
|
4706
PUT
LiveRamp
RAMP
$2.29B
| $144K | ﹤0.01% |
5,000
-6,800
| -58% | -$201K |
|
4707
PUT
Relmada Therapeutics
RLMD
$540M
| $144K | ﹤0.01% |
48,200
-3,700
| -7% | -$11K |
|
|
TELL
4708
PUT
DELISTED
Tellurian Inc.
TELL
| $144K | ﹤0.01% |
124,900
+82,500
| +195% | +$112K |
|
4709
CALL
Alight
ALIT
$534M
| $143K | ﹤0.01% |
1,015
-8,790
| -90% | -$1.48M |
|
|
ARR
4710
Armour Residential REIT
ARR
$2.32B
| $143K | ﹤0.01% |
+6,756
| New | +$166K |
|
4711
Direxion Daily CSI 300 China A Share Bull 2X ETF
CHAU
$87.8M
| $143K | ﹤0.01% |
8,830
+5,292
| +150% | +$92.9K |
|
4712
CALL
National CineMedia
NCMI
$378M
| $143K | ﹤0.01% |
+31,900
| New | +$126K |
|
4713
Woodside Energy
WDS
$44.2B
| $143K | ﹤0.01% |
6,151
+5,080
| +474% | +$124K |
|
4714
CALL
Offerpad Solutions
OPAD
$18.5M
| $142K | ﹤0.01% |
1,460
-360
| -20% | -$40.3K |
|
4715
CALL
Pentair
PNR
$10.6B
| $142K | ﹤0.01% |
2,200
-4,500
| -67% | -$303K |
|
4716
CALL
Revolve Group
RVLV
$1.85B
| $142K | ﹤0.01% |
10,500
-9,100
| -46% | -$145K |
|
4717
CALL
Stellus Capital Investment Corp
SCM
$205M
| $142K | ﹤0.01% |
10,500
+5,200
| +98% | +$74.5K |
|
4718
TFI International
TFII
$11.6B
| $142K | ﹤0.01% |
+1,107
| New | +$141K |
|
4719
Tencent Music
TME
$15.9B
| $142K | ﹤0.01% |
22,331
-35,997
| -62% | -$240K |
|
|
ME
4720
CALL
DELISTED
23andMe Holding Co
ME
| $142K | ﹤0.01% |
7,300
+1,810
| +33% | +$50.7K |
|
|
SILK
4721
PUT
DELISTED
Silk Road Medical, Inc. Common Stock
SILK
| $142K | ﹤0.01% |
+9,500
| New | +$198K |
|
|
BRAG
4722
Bragg Gaming Group
BRAG
$42.2M
| $141K | ﹤0.01% |
+29,027
| New | +$140K |
|
4723
CALL
Deluxe
DLX
$1.25B
| $141K | ﹤0.01% |
7,500
+900
| +14% | +$17.5K |
|
4724
FirstCash
FCFS
$8.77B
| $141K | ﹤0.01% |
+1,408
| New | +$133K |
|
4725
CALL
Fennec Pharmaceuticals
FENC
$335M
| $141K | ﹤0.01% |
18,900
+5,200
| +38% | +$42.3K |
|
Similar funds
Simplex Trading's Q3 2023 Portfolio in Review
As of Q3 2023, Simplex Trading held 10,417 positions worth $127B, up 4.5% from $122B the previous quarter. Its ten largest holdings account for 44% of the portfolio.
Simplex Trading deployed $11.9B of net new capital in Q3 2023, opening 1,399 new positions and adding to 3,690 existing holdings. Its largest new stake was Amazon: 841,102 shares worth $107M.
By sector, the portfolio is most concentrated in Technology at 0.44% of assets, up from 0.41% a quarter earlier, followed by Consumer Discretionary and Healthcare.
On the sell side, the largest reduction was Netflix, an estimated $27.1M trimmed.
- Simplex Trading's largest Q3 2023 buy was Amazon: 841,102 shares worth $107M.
- Simplex Trading added most to SPDR Gold Trust in Q3 2023, an estimated $68.6M increase.
- Simplex Trading's biggest Q3 2023 reduction was Netflix, cutting an estimated $27.1M.
- Simplex Trading fully exited Qualcomm in Q3 2023, selling an estimated $24.6M.
- Simplex Trading's ten largest holdings make up 44% of its $127B portfolio in Q3 2023.
- Simplex Trading opened 1,399 new positions and closed 1,719 in Q3 2023.
- Simplex Trading's portfolio value rose 4.5% quarter-over-quarter to $127B.
Based on Simplex Trading's 13F filing for Q3 2023, filed 1 Nov 2023.