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 |
Alibaba
BABA
|
+$39.9M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$39M |
| 3 |
Mastercard
MA
|
+$31.3M |
| 4 |
Apple
AAPL
|
+$25.3M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$25.1M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
JPMorgan Chase
JPM
|
+$52.8M |
| 2 |
TSMC
TSM
|
+$43M |
| 3 |
Amazon
AMZN
|
+$24.7M |
| 4 |
iShares Silver Trust
SLV
|
+$24.2M |
| 5 |
Netflix
NFLX
|
+$21.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 0.65% |
| 2 | Technology | 0.37% |
| 3 | Healthcare | 0.33% |
| 4 | Industrials | 0.21% |
| 5 | Communication Services | 0.19% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
PAYA
2626
CALL
DELISTED
Paya Holdings Inc. Class A Common Stock
PAYA
| $953K | ﹤0.01% |
+702
| New | +$8.16K |
|
2627
CALL
Aurinia Pharmaceuticals
AUPH
$1.97B
| $951K | ﹤0.01% |
688
+139
| +25% | +$2.02K |
|
2628
PUT
Matsons
MATX
$6.37B
| $951K | ﹤0.01% |
167
+142
| +568% | +$7.75K |
|
2629
PUT
Booz Allen Hamilton
BAH
$8.7B
| $950K | ﹤0.01% |
109
+107
| +5,350% | +$9.1K |
|
|
SGMO
2630
DELISTED
SANGAMO THERAPEUTICS INC
SGMO
| $948K | ﹤0.01% |
60,812
+31,640
| +108% | +$371K |
|
2631
CALL
Fluor
FLR
$7.29B
| $947K | ﹤0.01% |
593
-296
| -33% | -$4.19K |
|
2632
Twilio
TWLO
$29.1B
| $947K | ﹤0.01% |
+2,798
| New | +$874K |
|
2633
CALL
LCI Industries
LCII
$2.51B
| $946K | ﹤0.01% |
73
+67
| +1,117% | +$8.23K |
|
|
AIV
2634
CALL
Aimco
AIV
$380M
| $945K | ﹤0.01% |
1,793
+1,568
| +697% | +$6.96K |
|
2635
Renaissance IPO ETF
IPO
$154M
| $944K | ﹤0.01% |
14,645
+13,177
| +898% | +$778K |
|
2636
CALL
Ryder
R
$10.3B
| $944K | ﹤0.01% |
153
-216
| -59% | -$12K |
|
2637
CALL
Cincinnati Financial
CINF
$28.3B
| $943K | ﹤0.01% |
108
-48
| -31% | -$3.83K |
|
|
GTLS
2638
CALL
DELISTED
Chart Industries
GTLS
| $942K | ﹤0.01% |
80
-39
| -33% | -$3.77K |
|
2639
PUT
uniQure
QURE
$2.68B
| $942K | ﹤0.01% |
261
+241
| +1,205% | +$10.2K |
|
2640
Abercrombie & Fitch
ANF
$4.17B
| $941K | ﹤0.01% |
+46,260
| New | +$848K |
|
|
ARR
2641
CALL
Armour Residential REIT
ARR
$2.02B
| $941K | ﹤0.01% |
175
-193
| -52% | -$9.93K |
|
2642
CALL
AvePoint
AVPT
$2.6B
| $941K | ﹤0.01% |
+627
| New | +$7.51K |
|
|
CHU
2643
CALL
DELISTED
China Unicom (HONG KONG) Limited
CHU
| $941K | ﹤0.01% |
1,658
+686
| +71% | +$4.34K |
|
2644
PUT
Eldorado Gold
EGO
$8.31B
| $940K | ﹤0.01% |
709
-1,016
| -59% | -$13K |
|
|
HAPN
2645
CALL
Happen Inc
HAPN
$2.08B
| $939K | ﹤0.01% |
890
+733
| +467% | +$4.9K |
|
2646
CALL
NETGEAR
NTGR
$669M
| $938K | ﹤0.01% |
231
+167
| +261% | +$5.68K |
|
2647
CALL
Eos Energy Enterprises
EOSE
$1.23B
| $937K | ﹤0.01% |
+450
| New | +$5.8K |
|
|
MDC
2648
CALL
DELISTED
M.D.C. Holdings, Inc.
MDC
| $937K | ﹤0.01% |
208
-174
| -46% | -$7.76K |
|
2649
PUT
American Outdoor Brands
AOUT
$162M
| $936K | ﹤0.01% |
550
+541
| +6,011% | +$8.15K |
|
2650
CALL
Boot Barn
BOOT
$4.55B
| $936K | ﹤0.01% |
216
+191
| +764% | +$7.19K |
|
Similar funds
Simplex Trading's Q4 2020 Portfolio in Review
As of Q4 2020, Simplex Trading held 9,568 positions worth $77.2B, up 5% from $73.5B the previous quarter. Its ten largest holdings account for 42% of the portfolio.
Simplex Trading's Q4 2020 filing shows 1,711 new, 3,402 increased, 3,106 reduced and 1,157 closed positions. Its largest new stake was Alibaba: 143,630 shares worth $33.4M. The largest sale was JPMorgan Chase, an estimated $52.8M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 0.65% of assets, up from 0.53% a quarter earlier, followed by Technology and Healthcare.
- Simplex Trading's largest Q4 2020 buy was Alibaba: 143,630 shares worth $33.4M.
- Simplex Trading added most to Invesco QQQ Trust in Q4 2020, an estimated $39M increase.
- Simplex Trading's biggest Q4 2020 reduction was JPMorgan Chase, cutting an estimated $52.8M.
- Simplex Trading fully exited Target in Q4 2020, selling an estimated $14.3M.
- Simplex Trading's ten largest holdings make up 42% of its $77.2B portfolio in Q4 2020.
- Simplex Trading opened 1,711 new positions and closed 1,157 in Q4 2020.
- Simplex Trading's portfolio value rose 5% quarter-over-quarter to $77.2B.
Based on Simplex Trading's 13F filing for Q4 2020, filed 2 Feb 2021.