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 |
SPDR Gold Trust
GLD
|
+$31.6M |
| 2 |
iShares Silver Trust
SLV
|
+$28.1M |
| 3 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$25.1M |
| 4 |
JPMorgan Chase
JPM
|
+$24.5M |
| 5 |
Direxion Daily Junior Gold Miners Index Bull 2X ETF
JNUG
|
+$24M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Alphabet (Google) Class C
GOOG
|
+$51.6M |
| 2 |
Amazon
AMZN
|
+$47.4M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$44.7M |
| 4 |
Netflix
NFLX
|
+$38.3M |
| 5 |
NVIDIA
NVDA
|
+$31.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.49% |
| 2 | Healthcare | 0.33% |
| 3 | Consumer Discretionary | 0.32% |
| 4 | Financials | 0.16% |
| 5 | Communication Services | 0.16% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
KSU
701
PUT
DELISTED
Kansas City Southern
KSU
| $4.96M | 0.01% |
390
+256
| +191% | +$39.1K |
|
702
PUT
MSCI
MSCI
$41.6B
| $4.94M | 0.01% |
171
+5
| +3% | +$1.42K |
|
703
CALL
Zscaler
ZS
$23B
| $4.93M | 0.01% |
811
-114
| -12% | -$6.28K |
|
704
CALL
Equinix
EQIX
$101B
| $4.93M | 0.01% |
79
-15
| -16% | -$8.97K |
|
705
AB InBev
BUD
$161B
| $4.93M | 0.01% |
111,829
+82,384
| +280% | +$5.38M |
|
706
CALL
Synopsys
SNPS
$72.3B
| $4.93M | 0.01% |
383
+373
| +3,730% | +$53.1K |
|
707
PUT
Norwegian Cruise Line
NCLH
$8.87B
| $4.93M | 0.01% |
4,497
+4,330
| +2,593% | +$174K |
|
708
PUT
Canadian Pacific Kansas City
CP
$81.1B
| $4.92M | 0.01% |
1,120
+65
| +6% | +$3.2K |
|
709
New Oriental
EDU
$7.75B
| $4.91M | 0.01% |
45,353
+39,091
| +624% | +$5.02M |
|
|
PXD
710
PUT
DELISTED
Pioneer Natural Resource Co.
PXD
| $4.9M | 0.01% |
698
-739
| -51% | -$87.8K |
|
711
CALL
Danaher
DHR
$127B
| $4.88M | 0.01% |
398
-550
| -58% | -$74.1K |
|
712
PUT
General Dynamics
GD
$101B
| $4.87M | 0.01% |
368
-216
| -37% | -$35.9K |
|
713
PUT
American International
AIG
$41.5B
| $4.87M | 0.01% |
2,007
+743
| +59% | +$31.9K |
|
714
CALL
Archer Daniels Midland
ADM
$42.1B
| $4.85M | 0.01% |
1,379
-275
| -17% | -$11.2K |
|
715
CALL
Cencora
COR
$58.5B
| $4.85M | 0.01% |
548
+362
| +195% | +$31.9K |
|
716
Nike
NKE
$62.6B
| $4.84M | 0.01% |
58,562
+57,418
| +5,019% | +$5.34M |
|
|
PARA
717
PUT
DELISTED
Paramount Global Class B
PARA
| $4.82M | 0.01% |
3,438
+725
| +27% | +$20.8K |
|
718
PUT
WisdomTree US Total Dividend Fund
DTD
$1.65B
| $4.81M | 0.01% |
5,222
+702
| +16% | +$34K |
|
719
CALL
Gen Digital
GEN
$15.4B
| $4.79M | 0.01% |
2,561
+1,171
| +84% | +$25.3K |
|
720
PUT
CF Industries
CF
$19.6B
| $4.77M | 0.01% |
1,755
-206
| -11% | -$7.65K |
|
|
GRUB
721
PUT
DELISTED
Just Eat Takeaway.com N.V. American Depositary Shares
GRUB
| $4.75M | 0.01% |
583
+55
| +10% | +$5.41K |
|
722
CALL
Humana
HUM
$47.7B
| $4.74M | 0.01% |
151
-151
| -50% | -$50.9K |
|
723
PUT
Moody's
MCO
$85.5B
| $4.74M | 0.01% |
224
+126
| +129% | +$30.6K |
|
|
VMW
724
CALL
DELISTED
VMware, Inc
VMW
| $4.74M | 0.01% |
391
-16
| -4% | -$2.2K |
|
725
PUT
WIX.com
WIX
$2.04B
| $4.72M | 0.01% |
468
+65
| +16% | +$8.49K |
|
Similar funds
Simplex Trading's Q1 2020 Portfolio in Review
As of Q1 2020, Simplex Trading held 8,783 positions worth $56.7B, up 24% from $45.7B the previous quarter. Its ten largest holdings account for 50% of the portfolio.
Simplex Trading's Q1 2020 filing shows 1,512 new, 3,249 increased, 2,705 reduced and 1,159 closed positions. Its largest new stake was SPDR Gold Trust: 212,230 shares worth $31.4M. The largest sale was Alphabet (Google) Class C, an estimated $51.6M.
By sector, the portfolio is most concentrated in Technology at 0.49% of assets, down from 0.75% a quarter earlier, followed by Healthcare and Consumer Discretionary.
- Simplex Trading's largest Q1 2020 buy was SPDR Gold Trust: 212,230 shares worth $31.4M.
- Simplex Trading added most to JPMorgan Chase in Q1 2020, an estimated $24.5M increase.
- Simplex Trading's biggest Q1 2020 reduction was Amazon, cutting an estimated $47.4M.
- Simplex Trading fully exited Alphabet (Google) Class C in Q1 2020, selling an estimated $51.6M.
- Simplex Trading's ten largest holdings make up 50% of its $56.7B portfolio in Q1 2020.
- Simplex Trading opened 1,512 new positions and closed 1,159 in Q1 2020.
- Simplex Trading's portfolio value rose 24% quarter-over-quarter to $56.7B.
Based on Simplex Trading's 13F filing for Q1 2020, filed 29 Apr 2020.