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
|
+$50.3M |
| 2 |
Boeing
BA
|
+$24.3M |
| 3 |
SPDR Gold Trust
GLD
|
+$18.3M |
| 4 |
Biogen
BIIB
|
+$15.9M |
| 5 |
FedEx
FDX
|
+$15.1M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Alphabet (Google) Class C
GOOG
|
+$60.3M |
| 2 |
iShares Russell 2000 ETF
IWM
|
+$36.4M |
| 3 |
Netflix
NFLX
|
+$19M |
| 4 |
State Street Industrial Select Sector SPDR ETF
XLI
|
+$17.3M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$14.2M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 0.49% |
| 2 | Technology | 0.48% |
| 3 | Healthcare | 0.35% |
| 4 | Industrials | 0.35% |
| 5 | Communication Services | 0.21% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
NBEV
3901
PUT
DELISTED
NewAge, Inc. Common Stock (Delaware)
NBEV
| $147K | ﹤0.01% |
536
-188
| -26% | -$664 |
|
|
MEET
3902
PUT
DELISTED
The Meet Group, Inc. Common Stock
MEET
| $147K | ﹤0.01% |
451
+376
| +501% | +$1.31K |
|
3903
PUT
Buckle
BKE
$2.32B
| $146K | ﹤0.01% |
71
+25
| +54% | +$481 |
|
|
BLD
3904
DELISTED
TopBuild
BLD
| $146K | ﹤0.01% |
+1,518
| New | +$134K |
|
3905
Renaissance IPO ETF
IPO
$149M
| $146K | ﹤0.01% |
5,183
+4,483
| +640% | +$140K |
|
3906
PUT
Lloyds Banking Group
LYG
$85.2B
| $146K | ﹤0.01% |
555
+549
| +9,150% | +$1.42K |
|
|
CHS
3907
CALL
DELISTED
Chicos FAS, Inc.
CHS
| $146K | ﹤0.01% |
363
+154
| +74% | +$520 |
|
3908
PUT
Cimpress
CMPR
$2.37B
| $145K | ﹤0.01% |
11
-39
| -78% | -$4.29K |
|
3909
CALL
EQT Corp
EQT
$32.9B
| $145K | ﹤0.01% |
141
+89
| +171% | +$1.15K |
|
3910
CALL
Gildan
GIL
$9.49B
| $145K | ﹤0.01% |
41
+33
| +413% | +$1.24K |
|
3911
PUT
Ichor Holdings
ICHR
$2.17B
| $145K | ﹤0.01% |
60
+43
| +253% | +$1.02K |
|
3912
iShares Europe ETF
IEV
$1.64B
| $145K | ﹤0.01% |
+3,370
| New | +$145K |
|
3913
CALL
Mercury Insurance
MCY
$6B
| $145K | ﹤0.01% |
26
+7
| +37% | +$401 |
|
|
PEO
3914
Adams Natural Resources Fund
PEO
$731M
| $145K | ﹤0.01% |
9,555
-4,148
| -30% | -$63.1K |
|
3915
CALL
Regency Centers
REG
$14.9B
| $145K | ﹤0.01% |
21
-89
| -81% | -$5.92K |
|
3916
SSR Mining
SSRM
$5.19B
| $145K | ﹤0.01% |
+10,052
| New | +$155K |
|
3917
CALL
UGI
UGI
$7.87B
| $145K | ﹤0.01% |
29
+26
| +867% | +$1.3K |
|
|
FRC
3918
PUT
DELISTED
First Republic Bank
FRC
| $145K | ﹤0.01% |
15
-93
| -86% | -$8.82K |
|
|
GLUU
3919
PUT
DELISTED
Glu Mobile Inc.
GLUU
| $145K | ﹤0.01% |
292
+265
| +981% | +$1.52K |
|
3920
Arrow Electronics
ARW
$10.5B
| $144K | ﹤0.01% |
1,933
-6,953
| -78% | -$492K |
|
|
BLDP
3921
CALL
Ballard Power Systems
BLDP
$754M
| $144K | ﹤0.01% |
295
+93
| +46% | +$421 |
|
3922
PUT
Granite Construction
GVA
$5.16B
| $144K | ﹤0.01% |
45
-10
| -18% | -$347 |
|
3923
Helen of Troy
HELE
$656M
| $144K | ﹤0.01% |
919
-216
| -19% | -$32.1K |
|
3924
CALL
Sonic Automotive
SAH
$3.56B
| $144K | ﹤0.01% |
46
+45
| +4,500% | +$1.22K |
|
|
FSCT
3925
DELISTED
ForeScout Technologies, Inc. Common Stock
FSCT
| $144K | ﹤0.01% |
3,822
+3,528
| +1,200% | +$129K |
|
Similar funds
Simplex Trading's Q3 2019 Portfolio in Review
As of Q3 2019, Simplex Trading held 8,410 positions worth $35.2B, down 4.1% from $36.6B the previous quarter. Its ten largest holdings account for 33% of the portfolio.
Simplex Trading's Q3 2019 filing shows 1,312 new, 3,129 increased, 2,596 reduced and 1,163 closed positions. Its largest new stake was SPDR Gold Trust: 131,281 shares worth $18.2M. The largest sale was Alphabet (Google) Class C, an estimated $60.3M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 0.49% of assets, up from 0.26% a quarter earlier, followed by Technology and Healthcare.
- Simplex Trading's largest Q3 2019 buy was SPDR Gold Trust: 131,281 shares worth $18.2M.
- Simplex Trading added most to Alibaba in Q3 2019, an estimated $50.3M increase.
- Simplex Trading's biggest Q3 2019 reduction was Alphabet (Google) Class C, cutting an estimated $60.3M.
- Simplex Trading fully exited iShares Russell 2000 ETF in Q3 2019, selling an estimated $36.4M.
- Simplex Trading's ten largest holdings make up 33% of its $35.2B portfolio in Q3 2019.
- Simplex Trading opened 1,312 new positions and closed 1,163 in Q3 2019.
- Simplex Trading's portfolio value fell 4.1% quarter-over-quarter to $35.2B.
Based on Simplex Trading's 13F filing for Q3 2019, filed 15 Oct 2019.