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 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$49.8M |
| 2 |
Apple
AAPL
|
+$24.5M |
| 3 |
Citigroup
C
|
+$23.5M |
| 4 |
Amazon
AMZN
|
+$22.7M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$18.5M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
LNKD
LinkedIn Corporation
LNKD
|
+$17.4M |
| 2 |
Wells Fargo
WFC
|
+$13.5M |
| 3 |
MDVN
MEDIVATION, INC.
MDVN
|
+$8.62M |
| 4 |
Goldman Sachs
GS
|
+$8.5M |
| 5 |
iShares iBoxx $ High Yield Corporate Bond ETF
HYG
|
+$8.15M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Communication Services | 8.76% |
| 2 | Technology | 7.19% |
| 3 | Healthcare | 6.91% |
| 4 | Consumer Discretionary | 6.53% |
| 5 | Financials | 5.37% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1926
PUT
American Eagle Outfitters
AEO
$2.85B
| $63K | ﹤0.01% |
172
-134
| -44% | -$2.29K |
|
1927
PUT
Aptiv
APTV
$12B
| $63K | ﹤0.01% |
379
-139
| -27% | -$9.33K |
|
1928
PUT
Ball Corp
BALL
$17B
| $63K | ﹤0.01% |
764
+670
| +713% | +$25.9K |
|
1929
PUT
Builders FirstSource
BLDR
$7.84B
| $63K | ﹤0.01% |
292
-6
| -2% | -$65 |
|
1930
PUT
Boston Properties
BXP
$11B
| $63K | ﹤0.01% |
233
+134
| +135% | +$16.7K |
|
1931
PUT
H&R Block
HRB
$5.18B
| $63K | ﹤0.01% |
297
-232
| -44% | -$5.3K |
|
1932
CALL
NOV
NOV
$7.45B
| $63K | ﹤0.01% |
546
-340
| -38% | -$12.4K |
|
1933
Novavax
NVAX
$1.23B
| $63K | ﹤0.01% |
2,529
-8,204
| -76% | -$239K |
|
1934
PUT
Plains All American Pipeline
PAA
$17.4B
| $63K | ﹤0.01% |
161
-254
| -61% | -$8.03K |
|
|
SA
1935
PUT
Seabridge Gold
SA
$2.8B
| $63K | ﹤0.01% |
251
-237
| -49% | -$2.33K |
|
1936
ProShares UltraPro Short Russell2000
SRTY
$76.3M
| $63K | ﹤0.01% |
12
+11
| +1,100% | +$71.5K |
|
1937
Valvoline
VVV
$4.97B
| $63K | ﹤0.01% |
+2,936
| New | +$62.2K |
|
|
HCR
1938
DELISTED
Hi-Crush Inc. Common Stock
HCR
| $63K | ﹤0.01% |
3,195
-3,590
| -53% | -$62.5K |
|
|
AXE
1939
CALL
DELISTED
Anixter International Inc
AXE
| $63K | ﹤0.01% |
39
+10
| +34% | +$724 |
|
|
VIAB
1940
CALL
DELISTED
Viacom Inc. Class B
VIAB
| $63K | ﹤0.01% |
1,658
+546
| +49% | +$20.1K |
|
|
GRA
1941
PUT
DELISTED
W.R. Grace & Co.
GRA
| $63K | ﹤0.01% |
567
+419
| +283% | +$28.6K |
|
1942
CALL
Advance Auto Parts
AAP
$3.37B
| $62K | ﹤0.01% |
190
-85
| -31% | -$13.4K |
|
1943
PUT
Akamai
AKAM
$16.8B
| $62K | ﹤0.01% |
414
+38
| +10% | +$2.42K |
|
1944
Healthpeak Properties
DOC
$15.4B
| $62K | ﹤0.01% |
+2,118
| New | +$64.6K |
|
1945
Globalstar
GSAT
$10.2B
| $62K | ﹤0.01% |
+2,627
| New | +$41.2K |
|
1946
CALL
National Health Investors
NHI
$3.9B
| $62K | ﹤0.01% |
218
+210
| +2,625% | +$15.4K |
|
1947
CALL
Principal Financial Group
PFG
$23.6B
| $62K | ﹤0.01% |
412
+100
| +32% | +$5.6K |
|
1948
CALL
TE Connectivity
TEL
$58.8B
| $62K | ﹤0.01% |
313
+72
| +30% | +$4.77K |
|
1949
PUT
UBS Group
UBS
$170B
| $62K | ﹤0.01% |
752
+320
| +74% | +$4.82K |
|
|
NVRO
1950
PUT
DELISTED
NEVRO CORP.
NVRO
| $62K | ﹤0.01% |
65
+22
| +51% | +$1.88K |
|
Similar funds
Simplex Trading's Q4 2016 Portfolio in Review
As of Q4 2016, Simplex Trading held 7,301 positions worth $1.67B, up 13% from $1.48B the previous quarter. Its ten largest holdings account for 20% of the portfolio.
Simplex Trading deployed $181M of net new capital in Q4 2016, opening 1,543 new positions and adding to 2,137 existing holdings. Its largest new stake was State Street SPDR S&P 500 ETF Trust: 227,870 shares worth $50.9M.
By sector, the portfolio is most concentrated in Communication Services at 8.8% of assets, up from 8.4% a quarter earlier, followed by Technology and Healthcare.
On the sell side, the largest reduction was Goldman Sachs, an estimated $8.5M trimmed.
- Simplex Trading's largest Q4 2016 buy was State Street SPDR S&P 500 ETF Trust: 227,870 shares worth $50.9M.
- Simplex Trading added most to Apple in Q4 2016, an estimated $24.5M increase.
- Simplex Trading's biggest Q4 2016 reduction was Goldman Sachs, cutting an estimated $8.5M.
- Simplex Trading fully exited LinkedIn Corporation in Q4 2016, selling an estimated $17.4M.
- Simplex Trading's ten largest holdings make up 20% of its $1.67B portfolio in Q4 2016.
- Simplex Trading opened 1,543 new positions and closed 1,480 in Q4 2016.
- Simplex Trading's portfolio value rose 13% quarter-over-quarter to $1.67B.
Based on Simplex Trading's 13F filing for Q4 2016, filed 11 Jan 2017.